add bitbang i2c5 & bitbang spi4

sipeed · May 15, 2024 · 9af3db7 · 9af3db7
1 parent 20a606b
commit 9af3db7
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diff --git a/build/boards/sg200x/sg2002_licheervnano_sd/dts_riscv/sg2002_licheervnano_sd.dts b/build/boards/sg200x/sg2002_licheervnano_sd/dts_riscv/sg2002_licheervnano_sd.dts
@@ -117,6 +117,10 @@
 	};
 };
 
+&spi0 {
+	status = "okay";
+};
+
 &spi1 {
 	status = "okay";
 };
@@ -125,6 +129,10 @@
 	status = "okay";
 };
 
+&spi3 {
+	status = "okay";
+};
+
 &dac {
         status = "okay";
         /delete-property/ mute-gpio-r;
@@ -145,6 +153,29 @@
 / {
         model = "LicheeRv Nano";
 
+	spi4: spi4@gpio {
+		compatible = "spi-gpio";
+		sck-gpio = <&porta 22 0>;
+		miso-gpio = <&porta 23 0>;
+		mosi-gpio = <&porta 25 0>;
+		cs-gpio = <&porta 24 0>;
+		num-chipselects = <1>;
+		status = "okay";
+
+		spidev@0 {
+			compatible = "spidev";
+			reg = <0>;
+		};
+	};
+
+	i2c5: i2c5@gpio {
+		compatible = "i2c-gpio";
+                scl-gpios = <&porta 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+                sda-gpios = <&porta 27 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+                i2c-gpio,delay-us = <5>;
+                status = "okay";
+	};
+
         gpio-keys {
                 compatible = "gpio-keys";
                 key-user {

diff --git a/build/boards/sg200x/sg2002_licheervnano_sd/linux/sg2002_licheervnano_sd_defconfig b/build/boards/sg200x/sg2002_licheervnano_sd/linux/sg2002_licheervnano_sd_defconfig
@@ -120,6 +120,7 @@ CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_MUX=y
 CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_I2C_GPIO=y
 # CONFIG_PTP_1588_CLOCK is not set
 CONFIG_PINCTRL=y
 CONFIG_CVITEK_PINCTRL_CV1835=y

diff --git a/build/boards/sg200x/sg2002_licheervnano_sd/u-boot/cvi_board_init.c b/build/boards/sg200x/sg2002_licheervnano_sd/u-boot/cvi_board_init.c
@@ -130,6 +130,16 @@ int cvi_board_init(void)
         mmio_write_32(0x05027078, 0x11);// Unlock PWR_GPIO[3]
         mmio_write_32(0x0502707c, 0x11);// Unlock PWR_GPIO[4]
 
+	// bitbang i2c
+        mmio_write_32(0x0300103C, 0x03); // GPIOA 15 GPIO_MODE
+	mmio_write_32(0x03001058, 0x03); // GPIOA 27 GPIO_MODE
+
+	// bitbang spi
+	mmio_write_32(0x03001060, 0x03); // GPIOA 24 GPIO_MODE
+	mmio_write_32(0x0300105C, 0x03); // GPIOA 23 GPIO_MODE
+	mmio_write_32(0x03001054, 0x03); // GPIOA 25 GPIO_MODE
+	mmio_write_32(0x03001050, 0x03); // GPIOA 22 GPIO_MODE
+
         // wait hardware bootup
         suck_loop(50);
 	user_led_off();

diff --git a/linux_5.10/drivers/i2c/i2c-dev.c b/linux_5.10/drivers/i2c/i2c-dev.c
@@ -35,6 +35,7 @@
 #define I2C2 "i2c@04020000"
 #define I2C3 "i2c@04030000"
 #define I2C4 "i2c@04040000"
+#define I2C5 "i2c5@gpio"
 #endif
 
 /*
@@ -680,6 +681,8 @@ static int i2cdev_attach_adapter(struct device *dev, void *dummy)
 		adap->i2c_idx = 3;
 	if (!strcmp(adap->dev.of_node->full_name, I2C4))
 		adap->i2c_idx = 4;
+	if (!strcmp(adap->dev.of_node->full_name, I2C5))
+		adap->i2c_idx = 5;
 
 	dev_set_name(&i2c_dev->dev, "i2c-%d", adap->i2c_idx);
 #else