On Thu, 2019-05-23 at 15:35 +0800, Long Cheng wrote:
Hi Greg,
Just a gentle ping!
thanks.
> Modify uart rx and complete for DMA
>
> Signed-off-by: Long Cheng
> ---
> drivers/tty/serial/8250/8250_mtk.c | 49
> +++-
> 1 file changed,
_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2):
arm: dts: mt2712: add uart APDMA to device tree
serial: 8250-mtk: modify uart DMA rx
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 51 +
drivers/tty/serial/8250/8250_mtk.c
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 51 +
1 file changed, 51 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
Modify uart rx and complete for DMA
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 49 +++-
1 file changed, 20 insertions(+), 29 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
index
On Fri, 2019-05-17 at 15:36 +0800, Long Cheng wrote:
> On Wed, 2019-05-15 at 21:48 +0800, Nicolas Boichat wrote:
> > On Sat, Apr 27, 2019 at 11:36 AM Long Cheng wrote:
> > >
> > > Modify uart rx and complete for DMA.
> >
> > I don't know much about t
On Wed, 2019-05-15 at 21:48 +0800, Nicolas Boichat wrote:
> On Sat, Apr 27, 2019 at 11:36 AM Long Cheng wrote:
> >
> > Modify uart rx and complete for DMA.
>
> I don't know much about the DMA framework, but can you please explain
> why you are making the changes i
Modify uart rx and complete for DMA.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 53
1 file changed, 23 insertions(+), 30 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
index
Add 8250 UART APDMA to support MediaTek UART. If MediaTek UART is
enabled by SERIAL_8250_MT6577, and we can enable this driver to offload
the UART device moving bytes.
Signed-off-by: Long Cheng
Signed-off-by: Sean Wang
---
drivers/dma/mediatek/Kconfig | 11 +
drivers/dma/mediatek
The filename matches mtk-uart-apdma.c.
So using "mtk-uart-apdma.txt" should be better.
And add some property.
Signed-off-by: Long Cheng
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33
.../devicetree/bindings/dma/mtk-uart-apdma.txt | 55 +
ared to v3:
-fix CONFIG_PM, will cause build fail
Changes compared to v2:
-remove unimportant parameters
-instead of cookie, use APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic opera
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 51 +
1 file changed, 51 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
On Thu, 2019-04-25 at 12:40 +0200, Matthias Brugger wrote:
>
> On 25/04/2019 10:41, Long Cheng wrote:
> > Add SW and HW follow control function.
>
> Can you please explain a bit more what you are doing in this patch.
> You change the setting of the registers for differe
In termios function, add Fractional divider to adjust baudrate.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 102
1 file changed, 102 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
Perfect 8250 mtk uart function,
1.Modify baudrate setting
2.Add follow control function
Long Cheng (2):
serial: 8250-mtk: add follow control
serial: 8250-mtk: modify baudrate setting
drivers/tty/serial/8250/8250_mtk.c | 162 +++--
1 file changed, 139
Add SW and HW follow control function.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 60 ++--
1 file changed, 37 insertions(+), 23 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
index
On Sun, 2019-03-10 at 17:31 -0700, Sean Wang wrote:
> Hi, Long
>
> List some comments as the below and this week I will find a board to
> test and then improve the driver.
>
> Sean
>
> On Wed, Mar 6, 2019 at 5:45 PM Long Cheng wrote:
> >
> > In DMA
On Sun, 2019-03-10 at 19:15 +0800, Nicolas Boichat wrote:
> On Thu, Mar 7, 2019 at 9:45 AM Long Cheng wrote:
> >
> > In DMA engine framework, add 8250 uart dma to support MediaTek uart.
> > If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
> > the
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/Kconfig | 11 +
drivers/dma/mediatek/Makefile
The filename matches mtk-uart-apdma.c.
So using "mtk-uart-apdma.txt" should be better.
And add some property.
Signed-off-by: Long Cheng
Reviewed-by: Rob Herring
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33
.../devicetree/bindings/dma/mtk-uart
Modify uart rx and complete for DMA.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 53
1 file changed, 23 insertions(+), 30 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
index
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 51 +
1 file changed, 51 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
ared to v2:
-remove unimportant parameters
-instead of cookie, use APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (4):
dmaengine: 8250_mtk_dma: add MediaTek uart D
On Mon, 2019-02-04 at 12:51 +0530, Vinod Koul wrote:
Hi Vinod sir,
> On 18-01-19, 11:10, Long Cheng wrote:
> > +static enum dma_status mtk_uart_apdma_tx_status(struct dma_chan *chan,
> > +dma_cookie_t cookie,
> > +
On Fri, 2019-01-18 at 11:10 +0800, Long Cheng wrote:
Hi Vinod Koul,
Just a gentle ping!
thanks.
> In DMA engine framework, add 8250 uart dma to support MediaTek uart.
> If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
> the performance, can enable the function.
>
On Sun, 2019-01-20 at 10:57 +0530, Vinod Koul wrote:
> On 10-01-19, 18:33, Long Cheng wrote:
> > On Fri, 2019-01-04 at 22:49 +0530, Vinod Koul wrote:
> > > On 02-01-19, 10:12, Long Cheng wrote:
> > > > In DMA engine framework, add 8250 uart dma to support MediaTek
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/Kconfig | 11 +
drivers/dma/mediatek/Makefile
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 51 +
1 file changed, 51 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
d.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (3):
dmaengine: 8250_mtk_dma: add MediaTek uart DMA support
arm: dts: mt2712: add uart APDMA to device tree
dt-bindings: dma: uart: rename binding
.../
The filename matches mtk-uart-apdma.c.
So using "mtk-uart-apdma.txt" should be better.
Signed-off-by: Long Cheng
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33
.../devicetree/bindings/dma/mtk-uart-apdma.txt | 33
2 fil
On Thu, 2019-01-10 at 18:33 +0800, Long Cheng wrote:
fix spell error
> On Fri, 2019-01-04 at 22:49 +0530, Vinod Koul wrote:
> > On 02-01-19, 10:12, Long Cheng wrote:
> > > In DMA engine framework, add 8250 uart dma to support MediaTek uart.
> > > If MediaTek uart enabl
On Fri, 2019-01-04 at 22:49 +0530, Vinod Koul wrote:
> On 02-01-19, 10:12, Long Cheng wrote:
> > In DMA engine framework, add 8250 uart dma to support MediaTek uart.
> > If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
> > the performance, can enable the func
On Wed, 2019-01-02 at 18:03 -0800, Randy Dunlap wrote:
> Hi,
>
> While you are making changes, here are a few more:
>
hi
OK, thanks for your comments.
>
> On 1/2/19 5:39 PM, Nicolas Boichat wrote:
> > diff --git a/drivers/dma/mediatek/Kconfig b/drivers/dma/mediatek/Kconfig
> > index 27bac0b..
On Thu, 2019-01-03 at 09:39 +0800, Nicolas Boichat wrote:
> On Wed, Jan 2, 2019 at 10:13 AM Long Cheng wrote:
> >
.
> > +/* interrupt trigger level for tx */
> > +#define VFF_TX_THRE(n) ((n) * 7 / 8)
> > +/* interrupt trigger level for rx */
> > +#
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 652 +++
drivers
In Mediatek SOCs, the uart can support DMA function.
Base on DMA engine formwork, we add the DMA code to support uart. And put the
code under drivers/dma.
This series contains document bindings, Kconfig to control the function enable
or not,
device tree including interrupt and dma device node, t
ause build fail
Changes compared to v2:
-remove unimportant parameters
-instead of cookie, use APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2):
dmaengine: 82
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 694 +++
drivers
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
On Wed, 2018-12-26 at 17:28 +0800, Nicolas Boichat wrote:
..
> > > > > > +static int mtk_uart_apdma_device_pause(struct dma_chan *chan)
> > > > > > +{
> > > > > > + /* just for check caps pass */
> > > > > > + return 0;
> > > > > > +}
> > > > > > +
> > > > > > +static int mtk_uart
On Wed, 2018-12-26 at 08:05 +0800, Nicolas Boichat wrote:
thanks.
> On Tue, Dec 25, 2018 at 8:06 PM Long Cheng wrote:
> >
> > Thanks for your comments.
> >
> > On Tue, 2018-12-25 at 15:16 +0800, Nicolas Boichat wrote:
> > > Not a full review, a fe
2018 at 9:27 AM Long Cheng wrote:
> >
> > In DMA engine framework, add 8250 uart dma to support MediaTek uart.
> > If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
> > the performance, can enable the function.
> >
> > Signed-off-by: Long Chen
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 694 +++
drivers
nimportant parameters
-instead of cookie, use APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2):
dmaengine: 8250_mtk_dma: add MediaTek uart DMA support
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
se APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2):
dmaengine: 8250_mtk_dma: add MediaTek uart DMA support
arm: dts: mt2712: add uart APDMA to device t
In DMA engine framework, add 8250 uart dma to support MediaTek uart.
If MediaTek uart enabled(SERIAL_8250_MT6577), and want to improve
the performance, can enable the function.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 694 +++
drivers
On Mon, 2018-12-17 at 02:07 -0800, Sean Wang wrote:
> On Mon, Dec 17, 2018 at 12:40 AM Long Cheng wrote:
> >
> > On Fri, 2018-12-14 at 12:09 -0800, Sean Wang wrote:
>
> < ... >
>
> > > > > > +
> > > > >
On Fri, 2018-12-14 at 12:09 -0800, Sean Wang wrote:
thanks for your reply.
> On Thu, Dec 13, 2018 at 3:36 AM Long Cheng wrote:
>
> Hope those comments did not get a response that means they're fine with you.
>
> < ... >
>
> > > > +struct mtk_dmadev
On Tue, 2018-12-11 at 15:12 -0800, Sean Wang wrote:
> Sorry for that I didn't have a full review at one time in the earlier version
>
>On Mon, Dec 10, 2018 at 9:37 PM Long Cheng
> wrote:
> >
> > In DMA engine framework, add 8250 mtk dma to support it.
>
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2):
dmaengine: 8250_mtk_dma: add Mediatek uart DMA support
arm: dts: mt2712: add uart APDMA to device tree
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 ++
drivers/dma/mediatek
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 830 +++
drivers/dma/mediatek/Kconfig| 11 +
drivers/dma/mediatek/Makefile |1 +
3 files changed, 842 insertions
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
standard
--remove atomic operation
Long Cheng (2):
dmaengine: 8250_mtk_dma: add Mediatek uart DMA support
arm: dts: mt2712: add uart APDMA to device tree
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 ++
drivers/dma/mediatek/8250_mtk_dma.c | 830
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 830 +++
drivers/dma/mediatek/Kconfig| 11 +
drivers/dma/mediatek/Makefile |1 +
3 files changed, 842 insertions
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 830 +++
drivers/dma/mediatek/Kconfig| 11 +
drivers/dma/mediatek/Makefile |1 +
3 files changed, 842 insertions
standard
--remove atomic operation
Long Cheng (2):
dmaengine: 8250_mtk_dma: add Mediatek uart DMA support
arm: dts: mt2701: add uart APDMA to device tree
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 ++
drivers/dma/mediatek/8250_mtk_dma.c | 830
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 847 +++
drivers/dma/mediatek/Kconfig| 11 +
drivers/dma/mediatek/Makefile |1 +
3 files changed, 859 insertions
, the code of UART DM
Changes compared to v2:
-remove unimportant parameters
-instead of cookie, use APIs of virtual channel.
-use of_dma_xlate_by_chan_id.
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (2
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
On Wed, 2018-12-05 at 13:07 -0800, Sean Wang wrote:
> .
> On Wed, Dec 5, 2018 at 1:31 AM Long Cheng wrote:
> >
> > In DMA engine framework, add 8250 mtk dma to support it.
> >
> > Signed-off-by: Long Cheng
> > ---
> >
, the code of UART DM
Changes compared to v1:
-mian revised file, 8250_mtk_dma.c
--parameters renamed for standard
--remove atomic operation
Long Cheng (4):
dt-bindings: dma: uart: add uart dma bindings
dmaengine: mtk_uart_dma: add Mediatek uart DMA support
serial: 8250-mtk: add uart DMA
add uart dma bindings
Signed-off-by: Long Cheng
Reviewed-by: Rob Herring
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 33
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
diff --git a/Documentation
1. add uart APDMA controller device node
2. add uart 0/1/2/3/4/5 DMA function
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt2712e.dtsi
b/arch/arm64/boot
Modify uart register to support DMA function.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 210 +++-
1 file changed, 209 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/mediatek/8250_mtk_dma.c | 894 +++
drivers/dma/mediatek/Kconfig| 11 +
drivers/dma/mediatek/Makefile |1 +
3 files changed, 906 insertions
add uart dma bindings
Signed-off-by: Long Cheng
---
.../devicetree/bindings/dma/8250_mtk_dma.txt | 32
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/8250_mtk_dma.txt
diff --git a/Documentation/devicetree/bindings/dma
, the code of UART DMA
function.
Long Cheng (4):
dt-bindings: dma: uart: add uart dma bindings
dmaengine: mtk_uart_dma: add Mediatek uart DMA support
serial: 8250-mtk: add uart DMA support
arm: dts: mt2701: add uart APDMA to device tree
.../devicetree/bindings/dma/8250_mtk_dma.txt
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/8250_mtk_dma.c | 1049
drivers/dma/Kconfig| 11 +
drivers/dma/Makefile |1 +
3 files changed, 1061 insertions(+)
create mode
Modify uart register to support DMA function.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 211 +++-
1 file changed, 210 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
1. add uart APDMA controller device node
2. add uart 0/1/2/3 DMA function
3. uart0 is console, So disable DMA
4. enable uart2 port to test DMA function.
Signed-off-by: Long Cheng
---
arch/arm64/boot/dts/mediatek/mt2712e.dtsi | 50 +
1 file changed, 50 insertions
In DMA engine framework, add 8250 mtk dma to support it.
Signed-off-by: Long Cheng
---
drivers/dma/Kconfig|9 +
drivers/dma/Makefile |1 +
drivers/dma/mtk_uart_dma.c | 955
3 files changed, 965 insertions(+)
create mode 100644
1. add uart APDMA controller device node
2. add uart 0/1/2/3 DMA function
3. uart0 is console, So disable DMA
4. enable uart2 port to test DMA function.
Signed-off-by: Long Cheng
---
arch/arm/boot/dts/mt2701-evb.dts | 22 ++
arch/arm/boot/dts/mt2701.dtsi| 29
add uart dma bindings
Signed-off-by: Long Cheng
---
.../devicetree/bindings/dma/mtk_uart_dma.txt | 32
1 file changed, 32 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/mtk_uart_dma.txt
diff --git a/Documentation/devicetree/bindings/dma
Modify uart register to support DMA function.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c | 194 +++-
1 file changed, 193 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/8250/8250_mtk.c
b/drivers/tty/serial/8250/8250_mtk.c
, the code of UART DMA
function.
Long Cheng (4):
dt-bindings: dma: uart: add uart dma bindings
dmaengine: mtk_uart_dma: add Mediatek uart DMA support
serial: 8250-mtk: add uart DMA support
arm: dts: mt2701: add uart APDMA to device tree
.../devicetree/bindings/dma/mtk_uart_dma.txt
On Fri, 2016-08-12 at 10:41 +0800, Long Cheng wrote:
> From: Eddie Huang
>
> mediatek can support baud rate up to 4M.
> the 'uart_get_baud_rate' function will limit the max baud rate.
> Modify max baud to remove the limit.
>
> Signed-off-by: Long Cheng
&
From: Eddie Huang
mediatek can support baud rate up to 4M.
the 'uart_get_baud_rate' function will limit the max baud rate.
Modify max baud to remove the limit.
Signed-off-by: Long Cheng
---
drivers/tty/serial/8250/8250_mtk.c |6 +-
drivers/tty/serial/8250/8250_port.c |
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