Re: [PATCH] vf610_adc: Fix internal temperature calculation

Hi Stefan, Sorry! for the delay. On 10/08/2015 11:46 AM, Stefan Agner wrote: Hi Bhuvan, On 2015-09-23 06:43, Bhuvanchandra DV wrote: There is an observed temperature difference of ~20°C with the internal temperature reading and the temperature measured on SoC package. Existing calculations

Re: [PATCH] vf610_adc: Fix internal temperature calculation

Hi Fugang, On 09/27/2015 09:23 PM, Jonathan Cameron wrote: On 23/09/15 14:43, Bhuvanchandra DV wrote: There is an observed temperature difference of ~20°C with the internal temperature reading and the temperature measured on SoC package. Existing calculations consider the typical values

[PATCH 3/3] arm: dts: imx7-colibri: Use enable-gpios for BL_ON

Use pwm-backlight driver 'enable-gpios' property for backlight on/off control. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/imx7-colibri.dtsi | 10 +- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boo

[PATCH 1/3] arm: dts: imx7: Update #pwm-cells for PWM polarity control

Update #pwm-cells to 3 in order to support PWM signal polarity control. Signed-off-by: Bhuvanchandra DV --- Documentation/devicetree/bindings/pwm/imx-pwm.txt | 6 +++--- arch/arm/boot/dts/imx7s.dtsi | 8 2 files changed, 7 insertions(+), 7 deletions(-) diff --git

[PATCH 2/3] arm: dts: imx7-colibri: Use pwm polarity control

Configure PWM polarity control. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/imx7-colibri.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi index a9cc657..2af5e3e 100644 --- a/arch/arm

[PATCH 0/3] iMX7 PWM polarity control

] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-October/294027.html [2] https://www.spinics.net/lists/arm-kernel/msg530818.html Bhuvanchandra DV (3): arm: dts: imx7: Update #pwm-cells for PWM polarity control arm: dts: imx7-colibri: Use pwm polarity control arm: dts: imx7-colibri

[PATCH v2] vf610_adc: Fix internal temperature calculation

| VDDconv | ADCR@Temp25 | | 3.0V| 0.696mV |30 | 950 | | 3.3V| 0.699mV |33 | 867 | Acked-by: Fugang Duan Signed-off-by: Bhuvanchandra DV --- drivers/iio/adc/vf610_adc.c | 19 ++- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a

[PATCH] net: fec: Fix dual ethernet issue in VFxx

On i.MX28, the MDIO bus is shared between the two RMII interfaces. However, in newer designs, such as Vybrid, this is not the case. This patch adds a quirk for the single MDIO case. This allows to use both FEC interfaces working independently on Vybird. Signed-off-by: Bhuvanchandra DV

[PATCH] ARM: imx: clk-vf610: Add clock for UART4 and UART5

Add support for clock gating of UART4 and UART5. We use these UART's in a (not yet mainlined) device tree. Signed-off-by: Bhuvanchandra DV --- arch/arm/mach-imx/clk-vf610.c |2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-imx/clk-vf610.c b/arch/arm/mach-imx/clk-vf

[PATCH 4/7] spi: spi-fsl-dspi: avoid preparing the clock two times

Signed-off-by: Bhuvanchandra DV --- drivers/spi/spi-fsl-dspi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 9b80d54..5378148 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -502,7

[PATCH 1/7] ARM: vf610: add second DSPI instance

Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf500.dtsi | 4 arch/arm/boot/dts/vfxxx.dtsi | 11 +++ 2 files changed, 15 insertions(+) diff --git a/arch/arm/boot/dts/vf500.dtsi b/arch/arm/boot/dts/vf500.dtsi index 1dbf8d2..f5f807c 100644 --- a/arch

[PATCH 2/7] ARM: vf-colibri: add SPI support and enable MCP2515 CAN

MCP2515 CAN controller is available on Colibri Evaluation board. Hence enable MCP2515 CAN. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 31 +++ arch/arm/boot/dts/vf-colibri.dtsi | 15 +++ 2 files changed, 46

[PATCH 3/7] spi: spi-fsl-dspi: Remove usage of devm_kzalloc

r7:807f1c80 r6:807f1c80 r5:0006 [1.764399] r4:807a7bc8 [1.771813] [<80773d08>] (kernel_init_freeable) from [<8059f864>] (kernel_init+0x10/0xf0) [ 1.789660] r10: r9: r8: r7: r6: r5:8059f854 [1.807381] r4: [1.81

[PATCH 5/7] spi: spi-fsl-dspi: Remove spi-bitbang

driver. Signed-off-by: Bhuvanchandra DV --- drivers/spi/Kconfig| 1 - drivers/spi/spi-fsl-dspi.c | 144 ++--- 2 files changed, 71 insertions(+), 74 deletions(-) diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 9982998..6316d6d 100644 --- a

[PATCH 6/7] spi: spi-fsl-dspi: split the resuable code

From: Chao Fu Add two functions: - dspi_data_from_popr - dspi_data_to_pushr Signed-off-by: Bhuvanchandra DV --- drivers/spi/spi-fsl-dspi.c | 118 +++-- 1 file changed, 60 insertions(+), 58 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers

[PATCH 7/7] spi: spi-fsl-dspi: Add support for TCFQ transfer mode

: Bhuvanchandra DV --- .../devicetree/bindings/spi/spi-fsl-dspi.txt | 2 + drivers/spi/spi-fsl-dspi.c | 74 +++--- 2 files changed, 68 insertions(+), 8 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-dspi.txt b/Documentation

[PATCH 0/7] Add SPI support for Colibri modules and DSPI driver fixes

- Add second dspi instance. - Enable MCP2515 CAN controller which is avaialble on Colibri evaluation board. - Respin the stalled patches of dspi fixes. Previous discussion at: http://comments.gmane.org/gmane.linux.ports.arm.kernel/359542 Bhuvanchandra DV (4): ARM: vf610: add second DSPI

[PATCH 0/3] Add RS-485 support and fix RTS/CTS implementation

- Add pinmux for UART_0 RTS/CTS pins. - Since hardware can handle RTS/CTS flow control automatically, remove manual control of RTS/CTS from set/get mctrl. - Add RS-485 support for Vybird platform. Bhuvanchandra DV (3): ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins

[PATCH 3/3] tty: serial: fsl_lpuart: Add support for RS-485

Enable Vybrid's build-in support for RS-485 auto RTS for controlling line direction of RS-485 transceiver driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 60 + 1 file changed, 60 insertions(+) diff --git a/drivers/tty/s

[PATCH 1/3] ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri.dtsi b/arch/arm/boot/dts/vf-colibri.dtsi index 68ca125..ad6c5ca 100644 --- a/arch/arm/boot/dts/vf-colibri.dtsi +++ b/arch/arm/boot/dts/vf

[PATCH 2/3] tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl

, hence remove the incorrect implementation. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 56 - 1 file changed, 10 insertions(+), 46 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index

Re: [PATCH 2/3] tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl

Hello Jakub, On 05/29/2015 03:34 PM, Jakub Kiciński wrote: On Fri, 29 May 2015 13:35:53 +0530, Bhuvanchandra DV wrote: The LPUART does not provide manual control of RTS/CTS signals, those can only be controlled by the hardware directly. Therefore manual control of those signals through mctrl

Re: [PATCH 3/3] tty: serial: fsl_lpuart: Add support for RS-485

On 05/29/2015 03:48 PM, Jakub Kiciński wrote: On Fri, 29 May 2015 13:35:54 +0530, Bhuvanchandra DV wrote: Enable Vybrid's build-in support for RS-485 auto RTS for controlling line direction of RS-485 transceiver driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpu

Re: [PATCH V2 0/3] Add RS-485 support and fix RTS/CTS implementation

Hello, Ping! On 06/01/2015 10:51 AM, Bhuvanchandra DV wrote: Changes since V1: Use common get/set mctrl control methods for both lpuart, lpuart32 and fix indention. Bhuvanchandra DV (3): ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins tty: serial: fsl_lpuart: remove

Re: [PATCH V2 2/3] tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl

Hello, On 06/08/2015 12:11 PM, Uwe Kleine-König wrote: Hello, On Mon, Jun 01, 2015 at 10:51:06AM +0530, Bhuvanchandra DV wrote: The LPUART does not provide manual control of RTS/CTS signals, those can only be controlled by the hardware directly. Therefore manual control of those signals

Re: [PATCH V2 2/3] tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl

On 06/08/2015 02:42 PM, Russell King - ARM Linux wrote: On Mon, Jun 01, 2015 at 10:51:06AM +0530, Bhuvanchandra DV wrote: +/* + * CTS/RTS can _only_ be handled + * automatically by the hardware. + */ That's really not acceptable. You need to do something here so that yo

[PATCH V2 0/3] Add RS-485 support and fix RTS/CTS implementation

Changes since V1: Use common get/set mctrl control methods for both lpuart, lpuart32 and fix indention. Bhuvanchandra DV (3): ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl tty: serial: fsl_lpuart: Add

[PATCH V2 1/3] ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri.dtsi b/arch/arm/boot/dts/vf-colibri.dtsi index 68ca125..ad6c5ca 100644 --- a/arch/arm/boot/dts/vf-colibri.dtsi +++ b/arch/arm/boot/dts/vf

[PATCH V2 2/3] tty: serial: fsl_lpuart: remove RTS/CTS control from set/get_mctrl

, hence remove the incorrect implementation. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 63 + 1 file changed, 7 insertions(+), 56 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index

[PATCH V2 3/3] tty: serial: fsl_lpuart: Add support for RS-485

Enable Vybrid's build-in support for RS-485 auto RTS for controlling line direction of RS-485 transceiver driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 56 + 1 file changed, 56 insertions(+) diff --git a/drivers/tty/s

[PATCH 0/3] Add PWM and backlight support for Colibri VF61 modules

Enabled pwm second instance and backlight control Bhuvanchandra DV (3): ARM: dts: vf610: Add PWM second instance ARM: dts: vf610-colibri: Add PWM support ARM: dts: vf610-colibri: Add backlight support arch/arm/boot/dts/vf610-colibri-eval-v3.dts | 14 arch/arm/boot/dts/vf610

[PATCH 1/3] ARM: dts: vf610: Add PWM second instance

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf610.dtsi | 13 + 1 file changed, 13 insertions(+) diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi index 4d2ec32..fb00f13 100644 --- a/arch/arm/boot/dts/vf610.dtsi +++ b/arch/arm/boot/dts/vf610.dtsi

[PATCH 3/3] ARM: dts: vf610-colibri: Add backlight support

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf610-colibri-eval-v3.dts |6 ++ arch/arm/boot/dts/vf610-colibri.dtsi|7 +++ 2 files changed, 13 insertions(+) diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts

[PATCH 2/3] ARM: dts: vf610-colibri: Add PWM support

The Colibri standard defines four pins as PWM outputs, two of them (PWM A and C) are routed to FTM instance 0 and the other two (PWM B and D) are routed to FTM instance 1. Hence enable both FTM instances for the Colibri module and mux the four pins accordingly. Signed-off-by: Bhuvanchandra DV

Re: [PATCH 2/3] ARM: dts: vf610-colibri: Add PWM support

On Thursday 18 September 2014 07:42 PM, Shawn Guo wrote: > On Wed, Sep 17, 2014 at 01:46:29PM +0530, Bhuvanchandra DV wrote: >> The Colibri standard defines four pins as PWM outputs, two of them (PWM >> A and C) are routed to FTM instance 0 and the other two (PWM B and D) >&g

Re: [PATCH 3/3] ARM: dts: vf610-colibri: Add backlight support

On Thursday 18 September 2014 07:47 PM, Shawn Guo wrote: > On Wed, Sep 17, 2014 at 01:46:30PM +0530, Bhuvanchandra DV wrote: >> Signed-off-by: Bhuvanchandra DV >> --- >> arch/arm/boot/dts/vf610-colibri-eval-v3.dts |6 ++ >> arch/arm/boot/dts/vf610

[PATCH v2 0/2] Add PWM and backlight support for Colibri VF61 modules

Changes since v1: [1] Sorted the node names alphabetically. [2] Updated the node name 'bl: backlight' to 'backlight: bl'. [3] Dropped the leading space in 'pwm-names' property of backlight. Bhuvanchandra DV (2): ARM: dts: vf610-colibri: Add PWM support ARM: dts

[PATCH v2 1/2] ARM: dts: vf610-colibri: Add PWM support

The Colibri standard defines four pins as PWM outputs, two of them (PWM A and C) are routed to FTM instance 0 and the other two (PWM B and D) are routed to FTM instance 1. Hence enable both FTM instances for the Colibri module and mux the four pins accordingly. Signed-off-by: Bhuvanchandra DV

[PATCH v2 2/2] ARM: dts: vf610-colibri: Add backlight support

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf610-colibri-eval-v3.dts |6 ++ arch/arm/boot/dts/vf610-colibri.dtsi|6 ++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts

Re: [PATCH v2 1/2] ARM: dts: vf610-colibri: Add PWM support

On Friday 19 September 2014 09:30 PM, Stefan Agner wrote: > Am 2014-09-19 15:38, schrieb Bhuvanchandra DV: >> The Colibri standard defines four pins as PWM outputs, two of them (PWM >> A and C) are routed to FTM instance 0 and the other two (PWM B and D) >> are routed to

Re: [PATCH v2 2/2] ARM: dts: vf610-colibri: Add backlight support

On Friday 19 September 2014 09:33 PM, Stefan Agner wrote: > Am 2014-09-19 15:38, schrieb Bhuvanchandra DV: >> Signed-off-by: Bhuvanchandra DV >> --- >> arch/arm/boot/dts/vf610-colibri-eval-v3.dts |6 ++ >> arch/arm/boot/dts/vf610-colibri.dtsi|6 +++

[PATCH v3 0/2] Add PWM and backlight support for Colibri VF61 modules

Changes since v2: [1] Droped the changes done in the root node. [2] Fix typo in backlight node. Bhuvanchandra DV (2): ARM: dts: vf610-colibri: Add PWM support ARM: dts: vf610-colibri: Add backlight support arch/arm/boot/dts/vf610-colibri-eval-v3.dts | 14 + arch/arm/boot/dts

[PATCH v3 2/2] ARM: dts: vf610-colibri: Add backlight support

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf610-colibri-eval-v3.dts |6 ++ arch/arm/boot/dts/vf610-colibri.dtsi|5 + 2 files changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts

[PATCH v3 1/2] ARM: dts: vf610-colibri: Add PWM support

The Colibri standard defines four pins as PWM outputs, two of them (PWM A and C) are routed to FTM instance 0 and the other two (PWM B and D) are routed to FTM instance 1. Hence enable both FTM instances for the Colibri module and mux the four pins accordingly. Signed-off-by: Bhuvanchandra DV

[PATCH V2 1/2] ARM: dts: vf-colibri: Add I2C support

Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |6 +- arch/arm/boot/dts/vf-colibri.dtsi | 13 + 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch

[PATCH V2 2/2] ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC

ST-M41T0M6 is available on Colibri carrier boards. Hence enable M41T0M6 RTC. Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |6 ++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm

[PATCH V2 0/2] Add I2C and enable M41T0M6 RTC

Bhuvanchandra DV (2): ARM: dts: vf-colibri: Add I2C support ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 12 +++- arch/arm/boot/dts/vf-colibri.dtsi | 13 + 2 files changed, 24 insertions(+), 1 deletion

[PATCH 0/2] Add I2C and enable M41T0M6 RTC

Add I2C support on Colibri VFxx moduels and enable M41T0M6 RTC available on Colibri carrier boards. Bhuvanchandra DV (2): ARM: dts: vf-colibri: Add I2C support ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 13 - arch/arm

[PATCH 1/2] ARM: dts: vf-colibri: Add I2C support

Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |7 ++- arch/arm/boot/dts/vf-colibri.dtsi | 13 + 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri

[PATCH 2/2] ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC

ST-M41T0M6 is available on Colibri carrier boards. Hence enable M41T0M6 RTC. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |6 ++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm/boot/dts/vf-colibri-eval

[PATCH] drm/panel: Add display timings for TPK U.S.A. LLC Fusion 7", 10.1" panels

Add support for TPK U.S.A. LLC Fusion 7", 10.1" panels to the DRM simple panel driver. Signed-off-by: Bhuvanchandra DV --- This patch is based on top of Stefan's clock polarity patches[1] [1] https://lkml.org/lkml/2016/5/5/20 .../bindings/display/panel/tpk,f07a-0102

[PATCH] spi-fsl-dspi: Fix CTAR Register access

present, hence configure CTAS to use CTAR0. Signed-off-by: Bhuvanchandra DV --- drivers/spi/spi-fsl-dspi.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 01fa95b..b21c3c0 100644 --- a/drivers/spi/spi

Re: [PATCH] spi-fsl-dspi: Fix CTAR Register access

On 12/10/2015 02:11 AM, Mark Brown wrote: On Wed, Dec 09, 2015 at 11:51:39AM +0530, Bhuvanchandra DV wrote: DSPI instances in Vybrid have a different amount of chip selects and CTARs (Clock and transfer Attributes Register). In case of DSPI1 we only have 2 CTAR registers and 4 CS. In present

[PATCH v2] spi-fsl-dspi: Fix CTAR Register access

present, hence configure CTAS to use CTAR0. Signed-off-by: Bhuvanchandra DV --- drivers/spi/spi-fsl-dspi.c | 12 ++-- 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 59a1143..39412c9 100644 --- a/drivers/spi/spi

[PATCH] ARM: dts: colibri-vf: Add pinmux for UART_0 aka UART_A RTS/CTS pins

Add pinmux for UART_A RTS, CTS pin's. Signed-off-by: Bhuvanchandra DV Acked-by: Stefan Agner --- arch/arm/boot/dts/vf-colibri.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri.dtsi b/arch/arm/boot/dts/vf-colibri.dtsi index e5949b9..700840f 100644

[RESEND PATCH V2 0/2] Add I2C and enable M41T0M6 RTC

Add I2C support on Colibri VFxx moduels and enable M41T0M6 RTC available on Colibri carrier boards. Bhuvanchandra DV (2): ARM: dts: vf-colibri: Add I2C support ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 12 +++- arch/arm

[RESEND PATCH V2 2/2] ARM: dts: vf-colibri-eval-v3.dts: Enable ST-M41T0M6 RTC

ST-M41T0M6 is available on Colibri carrier boards. Hence enable M41T0M6 RTC. Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |6 ++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch/arm

[RESEND PATCH V2 1/2] ARM: dts: vf-colibri: Add I2C support

Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi |6 +- arch/arm/boot/dts/vf-colibri.dtsi | 13 + 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi b/arch

[PATCH V2] ARM: vf-colibri: add SPI support and enable MCP2515 CAN

MCP2515 CAN controller is available on Colibri Evaluation board. Hence enable MCP2515 CAN. Acked-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 31 +++ arch/arm/boot/dts/vf-colibri.dtsi | 15

[PATCH] spi: fsl-dspi: Remove possible memory leak of 'chip'

Move the check for spi->bits_per_word before allocation, to avoid memory leak. Signed-off-by: Dan Carpenter Signed-off-by: Bhuvanchandra DV --- drivers/spi/spi-fsl-dspi.c | 13 +++-- 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/

Re: [RFC 1/2] spi: spidev: Use 'new_id' sysfs file for enabling spidev

On 04/18/2016 06:31 PM, Mark Brown wrote: On Mon, Apr 18, 2016 at 04:48:27PM +0530, Bhuvanchandra DV wrote: +++ b/Documentation/ABI/testing/sysfs-bus-spi-spidev @@ -0,0 +1,8 @@ +What: /sys/bus/spi/drivers/spidev/new_id +Date: March 2016 +Description: + This

Re: [RFC 1/2] spi: spidev: Use 'new_id' sysfs file for enabling spidev

On 04/20/2016 05:47 PM, Mark Brown wrote: On Wed, Apr 20, 2016 at 05:43:32PM +0530, Bhuvanchandra DV wrote: SPI drivers bind to the device as configured in DT, but in case of spidev(non DT approach) the device is not available in hand to bind the driver. So tried this approach of creating the

[RFC 0/2] sysfs new_id file support for spidev

This patchset adds support for loading spidev via sysfs new_id file. Any comments/suggestions welcome! Bhuvanchandra DV (2): spi: spidev: Use 'new_id' sysfs file for enabling spidev spi core: Add new sysfs 'num_chipselect' file Documentation/ABI/testing/sysfs

[RFC 2/2] spi core: Add new sysfs 'num_chipselect' file

Add new sysfs 'num_chipselect' file to expose the maximum number of chipselects a SPI master can support. This allows to create a script in user space which automatically creates a new spidev instance for every chipselect on a bus. Signed-off-by: Bhuvanchandra DV Signed-off-by: St

[RFC 1/2] spi: spidev: Use 'new_id' sysfs file for enabling spidev

ggested by Greg. [1] http://thread.gmane.org/gmane.linux.kernel.spi.devel/20331/focus=20369 Suggested-by: Greg Kroah-Hartman Signed-off-by: Bhuvanchandra DV Signed-off-by: Stefan Agner --- Documentation/ABI/testing/sysfs-bus-spi-spidev | 8 +++ drivers/spi/spidev.c

[PATCH RESEND v2 0/8] Improve Rx/Tx DMA implementation

Drop the clock change patch from v2 patchset[1] since it is applied. Changes since v1: Split suspend/resume patch. [1] https://lkml.org/lkml/2016/6/28/124 Bhuvanchandra DV (5): tty: serial: fsl_lpuart: Fix broken 8m/s1 support tty: serial: fsl_lpuart: Use cyclic DMA for Rx tty: serial

[PATCH RESEND v2 8/8] tty: serial: fsl_lpuart: Add support for RS-485

Enable Vybrid's build-in support for RS-485 auto RTS for controlling line direction of RS-485 transceiver driver. Enable RS485 feature by either using ioctrl 'TIOCSRS485' or enable it in the device tree by setting 'linux,rs485-enabled-at-boot-time' property. Signed

[PATCH RESEND v2 2/8] tty: serial: fsl_lpuart: support suspend/resume

From: Stefan Agner Add suspend/resume support. Signed-off-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 16 ++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial

[PATCH RESEND v2 5/8] tty: serial: fsl_lpuart: Use cyclic DMA for Rx

driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 483 +--- 1 file changed, 258 insertions(+), 225 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 615f191..51d2b5a 100644 --- a/drivers

[PATCH RESEND v2 1/8] tty: serial: fsl_lpuart: consider TX FIFO too in tx_empty

driver by checking whether the TX DMA is in progress too. Signed-off-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 14 -- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial

[PATCH RESEND v2 7/8] tty: serial: fsl_lpuart: Update suspend/resume for DMA mode

start the DMA at resume. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 44 + 1 file changed, 44 insertions(+) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 27687d5..134090a 100644 --- a/drivers

[PATCH RESEND v2 3/8] tty: serial: fsl_lpuart: fix clearing of receive flag

l required. This leads to a FIFO underrun. To avoid this, follow the advice in the overrun "Operation section": Unconditionally clear RXUF after using RXFLUSH. Signed-off-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 9 ++--- 1 file changed

[PATCH RESEND v2 4/8] tty: serial: fsl_lpuart: Fix broken 8m/s1 support

By default the driver always configure the mode as 8s1 even when 8m1 mode is selected. Fix this by adding support to control the space/mark bit. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 9 +++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a

[PATCH RESEND v2 6/8] tty: serial: fsl_lpuart: Use scatter/gather DMA for Tx

Drop PIO to DMA switching and use scatter/gather DMA for Tx path to improve performance. Some part of the code is borrowed from imx serial driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 257 ++-- 1 file changed, 113 insertions

[PATCH 3/8] tty: serial: fsl_lpuart: fix clearing of receive flag

From: Stefan Agner Commit 8e4934c6d6c6 ("tty: serial: fsl_lpuart: clear receive flag on FIFO flush") implemented clearing of the receive flag by reading the status register only. It turned out that even though we flush the FIFO afterwards, a explicit read of the data register is still required.

[PATCH 4/8] tty: serial: fsl_lpuart: Fix broken 8m/s1 support

By default the driver always configure the mode as 8s1 even when 8m1 mode is selected. Fix this by adding support to control the space/mark bit. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 9 +++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a

[PATCH 2/8] tty: serial: fsl_lpuart: support suspend/resume

From: Stefan Agner In order to allow wake support in STOP sleep mode, clocks are needed. Use imx_clk_gate2_cgr to disable automatic clock gating in low power mode STOP. This allows to enable wake by UART using: echo enabled > /sys/class/tty/ttyLP0/power/wakeup However, if wake is not enabled, th

[PATCH 0/8] Improve Rx/Tx DMA implementation

Bhuvanchandra DV (5): tty: serial: fsl_lpuart: Fix broken 8m/s1 support tty: serial: fsl-lpuart: Use cyclic DMA for Rx tty: serial: fsl-lpuart: Use scatter/gather DMA for Tx Drop PIO to DMA switching and use scatter/gather DMA for Tx path to improve performance. tty: serial: fsl

[PATCH 7/8] tty: serial: fsl-lpuart: Update suspend/resume for DMA mode

start the DMA at resume. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 44 + 1 file changed, 44 insertions(+) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 27687d5..134090a 100644 --- a/drivers

[PATCH 5/8] tty: serial: fsl-lpuart: Use cyclic DMA for Rx

driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 483 +--- 1 file changed, 258 insertions(+), 225 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 615f191..51d2b5a 100644 --- a/drivers

[PATCH 1/8] tty: serial: fsl_lpuart: consider TX FIFO too in tx_empty

From: Stefan Agner Currently the tx_empty callback only considers the Transmit Complete Flag (TC). The reference manual is not quite clear if the TC flag covers the TX FIFO too. Debug prints on real hardware have shown that from time to time the TC flag is asserted (indicating Transmitter idle) w

[PATCH 8/8] tty: serial: fsl_lpuart: Add support for RS-485

Enable Vybrid's build-in support for RS-485 auto RTS for controlling line direction of RS-485 transceiver driver. Enable RS485 feature by either using ioctrl 'TIOCSRS485' or enable it in the device tree by setting 'linux,rs485-enabled-at-boot-time' property. Signed

[PATCH 6/8] tty: serial: fsl-lpuart: Use scatter/gather DMA for Tx Drop PIO to DMA switching and use scatter/gather DMA for Tx path to improve performance.

Some part of the code is borrowed from imx serial driver. Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 257 ++-- 1 file changed, 113 insertions(+), 144 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial

Re: [PATCH v2 0/9] Improve Rx/Tx DMA implementation

Ping! On 06/28/16 11:02, Bhuvanchandra DV wrote: Changes since v1: Split suspend/resume patch. Bhuvanchandra DV (5): tty: serial: fsl_lpuart: Fix broken 8m/s1 support tty: serial: fsl-lpuart: Use cyclic DMA for Rx tty: serial: fsl-lpuart: Use scatter/gather DMA for Tx tty: serial

Re: [PATCH] tty: serial: fsl_lpuart: Fix Tx DMA edge case

On 10/07/16 03:43, Aaron Brice wrote: In the case where head == 0 on the circular buffer, there should be one DMA buffer, not two. The second zero-length buffer would break the lpuart driver, transfer would never complete. Tested-by: Bhuvanchandra DV Signed-off-by: Aaron Brice

[PATCH v3 6/6] arm: dts: imx7-colibri: Use enable-gpios for BL_ON

Use pwm-backlight driver 'enable-gpios' property for backlight on/off control. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/imx7-colibri.dtsi | 10 +- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boo

[PATCH v3 5/6] arm: dts: imx7-colibri: Use pwm polarity control

Configure PWM polarity control. Signed-off-by: Bhuvanchandra DV --- arch/arm/boot/dts/imx7-colibri.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx7-colibri.dtsi b/arch/arm/boot/dts/imx7-colibri.dtsi index a9cc657..2af5e3e 100644 --- a/arch/arm

[PATCH v3 3/6] pwm: imx: support output polarity inversion

From: Lothar Wassmann The i.MX pwm unit on i.MX27 and newer SoCs provides a configurable output polarity. This patch adds support to utilize this feature where available. Signed-off-by: Lothar Waßmann Signed-off-by: Lukasz Majewski Signed-off-by: Bhuvanchandra DV Acked-by: Shawn Guo

Re: [PATCH v2 2/6] pwm: core: make the PWM_POLARITY flag in DTB optional

Hi Lukasz, On 10/06/16 12:06, Lukasz Majewski wrote: Hi Bhuvanchandra, From: Lothar Wassmann Change the pwm chip driver registration, so that a chip driver that supports polarity inversion can still be used with DTBs that don't provide the 'PWM_POLARITY' flag. This is

[PATCH v3 1/6] pwm: print error messages with pr_err() instead of pr_debug()

From: Lothar Wassmann Make the messages that are printed in case of fatal errors actually visible to the user without having to recompile the driver with debugging enabled. Signed-off-by: Lothar Waßmann Signed-off-by: Bhuvanchandra DV --- drivers/pwm/core.c | 4 ++-- 1 file changed, 2

[PATCH v3 0/6] Support PWM polarity control

arm-kernel/msg530818.html Bhuvanchandra DV (3): arm: dts: imx7: Update #pwm-cells for PWM polarity control arm: dts: imx7-colibri: Use pwm polarity control arm: dts: imx7-colibri: Use enable-gpios for BL_ON Lothar Wassmann (3): pwm: print error messages with pr_err() instead of pr_de

[PATCH v3 2/6] pwm: core: make the PWM_POLARITY flag in DTB optional

g to modify all existing DTS files. Signed-off-by: Lothar Wassmann Signed-off-by: Lukasz Majewski Signed-off-by: Bhuvanchandra DV Suggested-by: Sascha Hauer --- drivers/pwm/core.c | 22 -- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/pwm/core.c b/dri

[PATCH v3 4/6] arm: dts: imx7: Update #pwm-cells for PWM polarity control

Update #pwm-cells to 3 in order to support PWM signal polarity control. Signed-off-by: Bhuvanchandra DV Acked-by: Rob Herring --- arch/arm/boot/dts/imx7s.dtsi | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi

Re: [PATCH] tty: serial: fsl_lpuart: fix del_timer_sync() vs timer routine deadlock

On 12/03/2016 02:25 PM, Nikita Yushchenko wrote: 03.12.2016 10:06, Bhuvanchandra DV пишет: On 12/03/2016 02:58 AM, Nikita Yushchenko wrote: Problem found via lockdep: - lpuart_set_termios() calls del_timer_sync(&sport->lpuart_timer) while holding sport->port.lock - sport->

Re: [PATCH] tty: serial: fsl_lpuart: fix del_timer_sync() vs timer routine deadlock

On 12/03/2016 02:58 AM, Nikita Yushchenko wrote: Problem found via lockdep: - lpuart_set_termios() calls del_timer_sync(&sport->lpuart_timer) while holding sport->port.lock - sport->lpuart_timer routine is lpuart_timer_func() that calls lpuart_copy_rx_to_tty() that acquires same lock. T

Re: [PATCH RESEND v2 0/8] Improve Rx/Tx DMA implementation

Hello, Any comments on this patchset? On 07/19/16 13:13, Bhuvanchandra DV wrote: Drop the clock change patch from v2 patchset[1] since it is applied. Changes since v1: Split suspend/resume patch. [1] https://lkml.org/lkml/2016/6/28/124 Bhuvanchandra DV (5): tty: serial: fsl_lpuart: Fix

Re: [PATCH RESEND v2 0/8] Improve Rx/Tx DMA implementation

Hi Andrew, On 08/02/16 20:58, Andrew Lunn wrote: On Tue, Aug 02, 2016 at 01:23:32PM +0530, Bhuvanchandra DV wrote: Hello, Any comments on this patchset? I tested v1 on my Vybrid board and it fixed the corruption issues i was seeing with the console on a serial port. I will try to test this

Re: [PATCH 1/8] tty: serial: fsl_lpuart: consider TX FIFO too in tx_empty

On 06/26/16 02:56, Greg KH wrote: On Thu, Jun 09, 2016 at 08:40:32PM +0530, Bhuvanchandra DV wrote: From: Stefan Agner Currently the tx_empty callback only considers the Transmit Complete Flag (TC). The reference manual is not quite clear if the TC flag covers the TX FIFO too. Debug prints

[PATCH v2 1/9] tty: serial: fsl_lpuart: consider TX FIFO too in tx_empty

driver by checking whether the TX DMA is in progress too. Signed-off-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 14 -- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial

[PATCH v2 4/9] tty: serial: fsl_lpuart: fix clearing of receive flag

l required. This leads to a FIFO underrun. To avoid this, follow the advice in the overrun "Operation section": Unconditionally clear RXUF after using RXFLUSH. Signed-off-by: Stefan Agner Signed-off-by: Bhuvanchandra DV --- drivers/tty/serial/fsl_lpuart.c | 9 ++--- 1 file changed

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