[PATCH v5 10/11] riscv: Add pinmux and gpio bindings for Kendryte K210

Sean Anderson
2020-08-15T15:52:36Z

This patch adds the necessary device tree bindings.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

(no changes since v2)

Changes in v2:
- Convert to use pinmux property
- Don't hog ISP on boot
- Re-order GPIOs to match the defaults more closely

arch/riscv/dts/k210-maix-bit.dts | 104 +++++++++++++++++++++++++++++++
arch/riscv/dts/k210.dtsi | 12 ++++
2 files changed, 116 insertions(+)

diff --git a/arch/riscv/dts/k210-maix-bit.dts b/arch/riscv/dts/k210-maix-bit.dts
index 5b32c5fd5f..e840e04ada 100644
--- a/arch/riscv/dts/k210-maix-bit.dts
+++ b/arch/riscv/dts/k210-maix-bit.dts
@@ -17,6 +17,22 @@
stdout-path = "serial0:115200";
};

+ gpio-leds {
+ compatible = "gpio-leds";
+
+ green {
+ gpios = <&gpio1_0 4 GPIO_ACTIVE_LOW>;
+ };
+
+ red {
+ gpios = <&gpio1_0 5 GPIO_ACTIVE_LOW>;
+ };
+
+ blue {
+ gpios = <&gpio1_0 6 GPIO_ACTIVE_LOW>;
+ };
+ };
+
sound {
compatible = "simple-audio-card";
simple-audio-card,format = "i2s";
@@ -39,9 +55,97 @@
};

&uarths0 {
+ pinctrl-0 = <&fpioa_uarths>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio0 {
+ pinctrl-0 = <&fpioa_gpiohs>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
+&gpio1 {
+ pinctrl-0 = <&fpioa_gpio>;
+ pinctrl-names = "default";
status = "okay";
};

&i2s0 {
#sound-dai-cells = <1>;
+ pinctrl-0 = <&fpioa_i2s0>;
+ pinctrl-names = "default";
+};
+
+&fpioa {
+ status = "okay";
+
+ fpioa_uarths: uarths {
+ pinmux = <K210_FPIOA(4, K210_PCF_UARTHS_RX)>,
+ <K210_FPIOA(5, K210_PCF_UARTHS_TX)>;
+ };
+
+ fpioa_gpio: gpio {
+ pinmux = <K210_FPIOA(8, K210_PCF_GPIO0)>,
+ <K210_FPIOA(9, K210_PCF_GPIO1)>,
+ <K210_FPIOA(10, K210_PCF_GPIO2)>,
+ <K210_FPIOA(11, K210_PCF_GPIO3)>,
+ <K210_FPIOA(12, K210_PCF_GPIO4)>,
+ <K210_FPIOA(13, K210_PCF_GPIO5)>,
+ <K210_FPIOA(14, K210_PCF_GPIO6)>,
+ <K210_FPIOA(15, K210_PCF_GPIO7)>;
+ };
+
+ fpioa_gpiohs: gpiohs {
+ pinmux = <K210_FPIOA(16, K210_PCF_GPIOHS0)>,
+ <K210_FPIOA(17, K210_PCF_GPIOHS1)>,
+ <K210_FPIOA(21, K210_PCF_GPIOHS5)>,
+ <K210_FPIOA(22, K210_PCF_GPIOHS6)>,
+ <K210_FPIOA(23, K210_PCF_GPIOHS7)>,
+ <K210_FPIOA(24, K210_PCF_GPIOHS8)>,
+ <K210_FPIOA(25, K210_PCF_GPIOHS9)>,
+ <K210_FPIOA(30, K210_PCF_GPIOHS14)>,
+ <K210_FPIOA(31, K210_PCF_GPIOHS15)>,
+ <K210_FPIOA(32, K210_PCF_GPIOHS16)>,
+ <K210_FPIOA(33, K210_PCF_GPIOHS17)>,
+ <K210_FPIOA(34, K210_PCF_GPIOHS18)>,
+ <K210_FPIOA(35, K210_PCF_GPIOHS19)>;
+ };
+
+ fpioa_i2s0: i2s0 {
+ pinmux = <K210_FPIOA(18, K210_PCF_I2S0_SCLK)>,
+ <K210_FPIOA(19, K210_PCF_I2S0_WS)>,
+ <K210_FPIOA(20, K210_PCF_I2S0_IN_D0)>;
+ };
+
+ fpioa_dvp: dvp {
+ pinmux = <K210_FPIOA(40, K210_PCF_SCCB_SDA)>,
+ <K210_FPIOA(41, K210_PCF_SCCB_SCLK)>,
+ <K210_FPIOA(42, K210_PCF_DVP_RST)>,
+ <K210_FPIOA(43, K210_PCF_DVP_VSYNC)>,
+ <K210_FPIOA(44, K210_PCF_DVP_PWDN)>,
+ <K210_FPIOA(45, K210_PCF_DVP_HSYNC)>,
+ <K210_FPIOA(46, K210_PCF_DVP_XCLK)>,
+ <K210_FPIOA(47, K210_PCF_DVP_PCLK)>;
+ };
+
+ fpioa_spi0: spi0 {
+ pinmux = <K210_FPIOA(36, K210_PCF_GPIOHS20)>, /* cs */
+ <K210_FPIOA(37, K210_PCF_GPIOHS21)>, /* rst */
+ <K210_FPIOA(38, K210_PCF_GPIOHS22)>, /* dc */
+ <K210_FPIOA(39, K210_PCF_SPI0_SCLK)>; /* wr */
+ };
+
+ fpioa_spi1: spi1 {
+ pinmux = <K210_FPIOA(26, K210_PCF_SPI1_D1)>,
+ <K210_FPIOA(27, K210_PCF_SPI1_SCLK)>,
+ <K210_FPIOA(28, K210_PCF_SPI1_D0)>,
+ <K210_FPIOA(29, K210_PCF_GPIOHS13)>;
+ };
+};
+
+&dvp0 {
+ pinctrl-0 = <&fpioa_dvp>;
+ pinctrl-names = "default";
};
diff --git a/arch/riscv/dts/k210.dtsi b/arch/riscv/dts/k210.dtsi
index 2546c7d4e0..fc7986b326 100644
--- a/arch/riscv/dts/k210.dtsi
+++ b/arch/riscv/dts/k210.dtsi
@@ -5,6 +5,7 @@

#include <dt-bindings/clock/k210-sysctl.h>
#include <dt-bindings/mfd/k210-sysctl.h>
+#include <dt-bindings/pinctrl/k210-pinctrl.h>
#include <dt-bindings/reset/k210-sysctl.h>

/ {
@@ -367,7 +368,18 @@
reg = <0x502B0000 0x100>;
clocks = <&sysclk K210_CLK_FPIOA>;
resets = <&sysrst K210_RST_FPIOA>;
+ kendryte,sysctl = <&sysctl>;
+ kendryte,power-offset = <K210_SYSCTL_POWER_SEL>;
+ pinctrl-0 = <&fpioa_jtag>;
+ pinctrl-names = "default";
status = "disabled";
+
+ fpioa_jtag: jtag {
+ pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
+ <K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
+ <K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
+ <K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
+ };
};

sha256: sha256 at 502C0000 {
--
2.28.0