board: purism: librem5: Compile time option for console on any UART

Move the uart console initlialization to the SPL.
Allow the console on any uart 1-4
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>

board/purism/librem5/librem5.c

@@ -31,19 +31,12 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define ENABLE_TPS_RESET
 
-#define UART_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_FSEL1)
-
 #define WDOG_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_HYS | PAD_CTL_PUE)
 
 static iomux_v3_cfg_t const wdog_pads[] = {
 	IMX8MQ_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
 };
 
-static iomux_v3_cfg_t const uart_pads[] = {
-	IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
-	IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
-};
-
 int board_early_init_f(void)
 {
 	struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
@@ -53,8 +46,6 @@ int board_early_init_f(void)
 	imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
 	set_wdog_reset(wdog);
 
-	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
-
 	return 0;
 }
 

board/purism/librem5/librem5.h

@@ -6,7 +6,6 @@
 #ifndef __LIBREM5_H__
 #define __LIBREM5_H__
 
-/* configured */
 #define CAMERA_EN IMX_GPIO_NR(1, 0)
 #define SD_EN IMX_GPIO_NR(1, 3)
 #define AUDIO_EN IMX_GPIO_NR(1, 4)
@@ -35,6 +34,15 @@
 #define SPI1_MISO IMX_GPIO_NR(5, 8)
 #define SPI1_SS0 IMX_GPIO_NR(5, 9)
 
+#define UART1_TX IMX_GPIO_NR(5, 23)
+#define UART1_RX IMX_GPIO_NR(5, 22)
+#define UART2_TX IMX_GPIO_NR(5, 25)
+#define UART2_RX IMX_GPIO_NR(5, 24)
+#define UART3_TX IMX_GPIO_NR(5, 27)
+#define UART3_RX IMX_GPIO_NR(5, 26)
+#define UART4_TX IMX_GPIO_NR(5, 11)
+#define UART4_RX IMX_GPIO_NR(5, 10)
+
 #define TPS_RESET IMX_GPIO_NR(3, 24)
 
 static iomux_v3_cfg_t const configure_pads[] = {
@@ -88,7 +96,6 @@ static inline void init_pinmux(void)
 
 	gpio_request(WWAN_EN, "WWAN_EN");
 	gpio_request(WWAN_nRESET, "WWAN_nRESET");
-	gpio_request(WIFI_EN, "WIFI_EN");
 
 	gpio_request(HUB_EN, "HUB_EN");
 	gpio_request(HUB_nRESET, "HUB_nRESET");
@@ -101,7 +108,11 @@ static inline void init_pinmux(void)
 	gpio_request(DSI_BIAS_EN, "DSI_BIAS_EN");
 	gpio_request(GPS_EN, "GPS_EN");
 	gpio_request(BL_EN, "BL_EN");
-#endif
+#ifndef CONSOLE_ON_UART4
+	gpio_request(WIFI_EN, "WIFI_EN");
+	gpio_direction_output(WIFI_EN, 0);
+#endif /* CONSOLE_ON_UART4 */
+#endif /* CONFIG_DM_GPIO */
 	gpio_direction_input(VOL_UP);
 	gpio_direction_input(VOL_DOWN);
 
@@ -116,7 +127,6 @@ static inline void init_pinmux(void)
 
 	gpio_direction_output(WWAN_EN, 0);
 	gpio_direction_output(WWAN_nRESET, 1);
-	gpio_direction_output(WIFI_EN, 0);
 
 	gpio_direction_output(HUB_EN, 0);
 	gpio_direction_output(HUB_nRESET, 1);

board/purism/librem5/spl.c

@@ -93,6 +93,18 @@ struct i2c_pads_info i2c_pad_info4 = {
 	},
 };
 
+#define UART_PAD_CTRL	(PAD_CTL_DSE6 | PAD_CTL_FSEL1)
+
+static iomux_v3_cfg_t const uart_pads[] = {
+	IMX8MQ_PAD_UART1_RXD__UART1_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART1_TXD__UART1_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART2_RXD__UART2_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART2_TXD__UART2_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART3_RXD__UART3_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_UART3_TXD__UART3_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_ECSPI2_SCLK__UART4_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	IMX8MQ_PAD_ECSPI2_MOSI__UART4_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
 #define USDHC1_PWR_GPIO IMX_GPIO_NR(2, 10)
 #define USDHC2_PWR_GPIO IMX_GPIO_NR(2, 19)
 
@@ -382,8 +394,6 @@ static int sdp_mmc_init(void)
 
 extern int board_ecspi_init(void);
 
-
-
 void board_init_f(ulong dummy)
 {
 	int ret;
@@ -393,7 +403,13 @@ void board_init_f(ulong dummy)
 
 	arch_cpu_init();
 
-	init_uart_clk(0);
+	init_uart_clk(CONSOLE_UART_CLK);
+	imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
+
+#ifdef CONSOLE_ON_UART4
+	gpio_request(WIFI_EN, "WIFI_EN");
+	gpio_direction_output(WIFI_EN, 1);
+#endif
 
 	board_early_init_f();
 

include/configs/librem5.h

@@ -79,6 +79,32 @@
 
 #endif /* CONFIG_SPL_BUILD*/
 
+#define CONSOLE_ON_UART1
+#define CONFIG_MXC_UART
+#define CONFIG_BAUDRATE			115200
+
+#ifdef CONSOLE_ON_UART1
+#define CONFIG_MXC_UART_BASE		UART1_BASE_ADDR
+#define CONSOLE_UART_CLK		0
+#define CONSOLE		"ttymxc0"
+#elif defined(CONSOLE_ON_UART2)
+#define CONFIG_MXC_UART_BASE		UART2_BASE_ADDR
+#define CONSOLE_UART_CLK		1
+#define CONSOLE		"ttymxc1"
+#elif defined(CONSOLE_ON_UART3)
+#define CONFIG_MXC_UART_BASE		UART3_BASE_ADDR
+#define CONSOLE_UART_CLK		2
+#define CONSOLE		"ttymxc2"
+#elif defined(CONSOLE_ON_UART4)
+#define CONFIG_MXC_UART_BASE		UART4_BASE_ADDR
+#define CONSOLE_UART_CLK		3
+#define CONSOLE		"ttymxc3"
+#else
+#define CONFIG_MXC_UART_BASE		UART1_BASE_ADDR
+#define CONSOLE_UART_CLK		0
+#define CONSOLE		"ttymxc0"
+#endif
+
 #define CONFIG_REMAKE_ELF
 
 #define CONFIG_BOARD_EARLY_INIT_F
@@ -126,7 +152,7 @@
 	"kernel_addr_r=0x80800000\0" \
 	"fdt_addr_r=0x83000000\0" \
 	"ramdisk_addr_r=0x83800000\0" \
-	"console=ttymxc0,115200\0" \
+	"console=" CONSOLE ",115200\0" \
 	"bootargs=${console}\0" \
 	"stdin=nc,serial\0" \
 	"stdout=nc,serial\0" \
@@ -167,10 +193,6 @@
 			PHYS_SDRAM_SIZE - 32*1024*1024)
 #define CONFIG_SYS_ALT_MEMTEST
 
-#define CONFIG_BAUDRATE			115200
-
-#define CONFIG_MXC_UART
-#define CONFIG_MXC_UART_BASE		UART1_BASE_ADDR
 
 /* Monitor Command Prompt */
 #undef CONFIG_SYS_PROMPT