From: Patrice Chotard <patrice.chot...@st.com>
Add DT nodes to enable ARM_PL180_MMCI IP support for STM32F746
and STM32F769 discovery boards
There is a hardware issue on these boards, it misses a pullup on the GPIO line
used as card detect to allow correct SD card detection.
As workaround, cd-gpios property is not present in DT.
So SD card is always considered present in the slot.
Signed-off-by: Christophe Priouzeau <christophe.priouz...@st.com>
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
arch/arm/dts/stm32f746-disco.dts | 12 ++++
arch/arm/dts/stm32f746.dtsi | 85 +++++++++++++++++++++++++
arch/arm/dts/stm32f769-disco.dts | 12 ++++
include/dt-bindings/pinctrl/stm32f746-pinfunc.h | 19 +++++-
4 files changed, 127 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts
index c92c2e2..9e8d2a0 100644
--- a/arch/arm/dts/stm32f746-disco.dts
+++ b/arch/arm/dts/stm32f746-disco.dts
@@ -65,6 +65,7 @@
aliases {
serial0 = &usart1;
spi0 = &qspi;
+ mmc0 = &sdio;
/* Aliases for gpios so as to use sequence */
gpio0 = &gpioa;
gpio1 = &gpiob;
@@ -238,3 +239,14 @@
reg = <0>;
};
};
+
+&sdio {
+ status = "okay";
+ cd-gpios = <&gpioc 13 0>;
+ cd-inverted;
+ pinctrl-names = "default", "opendrain";
+ pinctrl-0 = <&sdio_pins>;
+ pinctrl-1 = <&sdio_pins_od>;
+ bus-width = <4>;
+ max-frequency = <25000000>;
+};
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index f62360f..929bf82 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -234,6 +234,91 @@
u-boot,dm-pre-reloc;
};
+ sdio_pins: sdio_pins@0 {
+ pins {
+ pinmux = <STM32F746_PC8_FUNC_SDMMC1_D0>,
+ <STM32F746_PC9_FUNC_SDMMC1_D1>,
+
<STM32F746_PC10_FUNC_SDMMC1_D2>,
+
<STM32F746_PC11_FUNC_SDMMC1_D3>,
+
<STM32F746_PC12_FUNC_SDMMC1_CK>,
+
<STM32F746_PD2_FUNC_SDMMC1_CMD>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_od: sdio_pins_od@0 {
+ pins1 {
+ pinmux = <STM32F746_PC8_FUNC_SDMMC1_D0>,
+ <STM32F746_PC9_FUNC_SDMMC1_D1>,
+
<STM32F746_PC10_FUNC_SDMMC1_D2>,
+
<STM32F746_PC11_FUNC_SDMMC1_D3>,
+
<STM32F746_PC12_FUNC_SDMMC1_CK>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+
+ pins2 {
+ pinmux =
<STM32F746_PD2_FUNC_SDMMC1_CMD>;
+ drive-open-drain;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_b: sdio_pins_b@0 {
+ pins {
+ pinmux = <STM32F769_PG9_FUNC_SDMMC2_D0>,
+
<STM32F769_PG10_FUNC_SDMMC2_D1>,
+ <STM32F769_PB3_FUNC_SDMMC2_D2>,
+ <STM32F769_PB4_FUNC_SDMMC2_D3>,
+
<STM32F769_PD6_FUNC_SDMMC2_CLK>,
+
<STM32F769_PD7_FUNC_SDMMC2_CMD>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+ };
+
+ sdio_pins_od_b: sdio_pins_od_b@0 {
+ pins1 {
+ pinmux = <STM32F769_PG9_FUNC_SDMMC2_D0>,
+
<STM32F769_PG10_FUNC_SDMMC2_D1>,
+ <STM32F769_PB3_FUNC_SDMMC2_D2>,
+ <STM32F769_PB4_FUNC_SDMMC2_D3>,
+
<STM32F769_PD6_FUNC_SDMMC2_CLK>;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+
+ pins2 {
+ pinmux =
<STM32F769_PD7_FUNC_SDMMC2_CMD>;
+ drive-open-drain;
+ slew-rate = <2>;
+ };
+ };
+
+ };
+ sdio: sdio@40012c00 {
+ compatible = "st,stm32f4xx-sdio";
+ reg = <0x40012c00 0x400>;
+ clocks = <&rcc 0 171>;
+ interrupts = <49>;
+ status = "disabled";
+ pinctrl-0 = <&sdio_pins>;
+ pinctrl-1 = <&sdio_pins_od>;
+ pinctrl-names = "default", "opendrain";
+ max-frequency = <48000000>;
+ };
+
+ sdio2: sdio2@40011c00 {
+ compatible = "st,stm32f4xx-sdio";
+ reg = <0x40011c00 0x400>;
+ clocks = <&rcc 0 167>;
+ interrupts = <103>;
+ status = "disabled";
+ pinctrl-0 = <&sdio_pins_b>;
+ pinctrl-1 = <&sdio_pins_od_b>;
+ pinctrl-names = "default", "opendrain";
+ max-frequency = <48000000>;
};
};
};
diff --git a/arch/arm/dts/stm32f769-disco.dts b/arch/arm/dts/stm32f769-disco.dts
index f34ffcc..59c9d31 100644
--- a/arch/arm/dts/stm32f769-disco.dts
+++ b/arch/arm/dts/stm32f769-disco.dts
@@ -60,6 +60,7 @@
aliases {
serial0 = &usart1;
spi0 = &qspi;
+ mmc0 = &sdio2;
/* Aliases for gpios so as to use sequence */
gpio0 = &gpioa;
gpio1 = &gpiob;
@@ -252,3 +253,14 @@
reg = <0>;
};
};
+
+&sdio2 {
+ status = "okay";
+ cd-gpios = <&gpioi 15 0>;
+ cd-inverted;
+ pinctrl-names = "default", "opendrain";
+ pinctrl-0 = <&sdio_pins_b>;
+ pinctrl-1 = <&sdio_pins_od_b>;
+ bus-width = <4>;
+ max-frequency = <25000000>;
+};
diff --git a/include/dt-bindings/pinctrl/stm32f746-pinfunc.h
b/include/dt-bindings/pinctrl/stm32f746-pinfunc.h
index 6348c6a..549323f 100644
--- a/include/dt-bindings/pinctrl/stm32f746-pinfunc.h
+++ b/include/dt-bindings/pinctrl/stm32f746-pinfunc.h
@@ -154,7 +154,6 @@
#define STM32F746_PA15_FUNC_EVENTOUT 0xf10
#define STM32F746_PA15_FUNC_ANALOG 0xf11
-
#define STM32F746_PB0_FUNC_GPIO 0x1000
#define STM32F746_PB0_FUNC_TIM1_CH2N 0x1002
#define STM32F746_PB0_FUNC_TIM3_CH3 0x1003
@@ -188,6 +187,9 @@
#define STM32F746_PB3_FUNC_TIM2_CH2 0x1302
#define STM32F746_PB3_FUNC_SPI1_SCK_I2S1_CK 0x1306
#define STM32F746_PB3_FUNC_SPI3_SCK_I2S3_CK 0x1307
+
+#define STM32F769_PB3_FUNC_SDMMC2_D2 0x130b
+
#define STM32F746_PB3_FUNC_EVENTOUT 0x1310
#define STM32F746_PB3_FUNC_ANALOG 0x1311
@@ -197,6 +199,9 @@
#define STM32F746_PB4_FUNC_SPI1_MISO 0x1406
#define STM32F746_PB4_FUNC_SPI3_MISO 0x1407
#define STM32F746_PB4_FUNC_SPI2_NSS_I2S2_WS 0x1408
+
+#define STM32F769_PB4_FUNC_SDMMC2_D3 0x140b
+
#define STM32F746_PB4_FUNC_EVENTOUT 0x1410
#define STM32F746_PB4_FUNC_ANALOG 0x1411
@@ -505,6 +510,9 @@
#define STM32F746_PD6_FUNC_SPI3_MOSI_I2S3_SD 0x3606
#define STM32F746_PD6_FUNC_SAI1_SD_A 0x3607
#define STM32F746_PD6_FUNC_USART2_RX 0x3608
+
+#define STM32F769_PD6_FUNC_SDMMC2_CLK 0x360c
+
#define STM32F746_PD6_FUNC_FMC_NWAIT 0x360d
#define STM32F746_PD6_FUNC_DCMI_D10 0x360e
#define STM32F746_PD6_FUNC_LCD_B2 0x360f
@@ -514,6 +522,9 @@
#define STM32F746_PD7_FUNC_GPIO 0x3700
#define STM32F746_PD7_FUNC_USART2_CK 0x3708
#define STM32F746_PD7_FUNC_SPDIFRX_IN0 0x3709
+
+#define STM32F769_PD7_FUNC_SDMMC2_CMD 0x370c
+
#define STM32F746_PD7_FUNC_FMC_NE1 0x370d
#define STM32F746_PD7_FUNC_EVENTOUT 0x3710
#define STM32F746_PD7_FUNC_ANALOG 0x3711
@@ -893,6 +904,9 @@
#define STM32F746_PG9_FUNC_USART6_RX 0x6909
#define STM32F746_PG9_FUNC_QUADSPI_BK2_IO2 0x690a
#define STM32F746_PG9_FUNC_SAI2_FS_B 0x690b
+
+#define STM32F769_PG9_FUNC_SDMMC2_D0 0x690c
+
#define STM32F746_PG9_FUNC_FMC_NE2_FMC_NCE 0x690d
#define STM32F746_PG9_FUNC_DCMI_VSYNC 0x690e
#define STM32F746_PG9_FUNC_EVENTOUT 0x6910
@@ -901,6 +915,9 @@
#define STM32F746_PG10_FUNC_GPIO 0x6a00
#define STM32F746_PG10_FUNC_LCD_G3 0x6a0a
#define STM32F746_PG10_FUNC_SAI2_SD_B 0x6a0b
+
+#define STM32F769_PG10_FUNC_SDMMC2_D1 0x6a0c
+
#define STM32F746_PG10_FUNC_FMC_NE3 0x6a0d
#define STM32F746_PG10_FUNC_DCMI_D2 0x6a0e
#define STM32F746_PG10_FUNC_LCD_B2 0x6a0f
--
1.9.1
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