From: Michael Trimarchi <mich...@amarulasolutions.com>
Add the needed DT overrides and configs to enable UART in SPL.
Cc: Fabio Estevam <feste...@gmail.com>
Signed-off-by: Michael Trimarchi <mich...@amarulasolutions.com>
Tested-by: Suniel Mahesh <su...@amarulasolutions.com>
---
Note:
Tested this patch on Engicam Starter Kit with I.CORE - M6 (MCIMX6Q7CVT08AC) SOM.
---
arch/arm/dts/imx6qdl-icore-u-boot.dtsi | 16 ++++++++++++++++
arch/arm/dts/imx6ul-isiot-u-boot.dtsi | 16 ++++++++++++++++
board/engicam/common/spl.c | 20 +++-----------------
configs/imx6dl_icore_nand_defconfig | 1 +
configs/imx6q_icore_nand_defconfig | 1 +
configs/imx6qdl_icore_mipi_defconfig | 1 +
configs/imx6qdl_icore_mmc_defconfig | 1 +
configs/imx6qdl_icore_nand_defconfig | 1 +
configs/imx6qdl_icore_rqs_defconfig | 1 +
9 files changed, 41 insertions(+), 17 deletions(-)
diff --git a/arch/arm/dts/imx6qdl-icore-u-boot.dtsi
b/arch/arm/dts/imx6qdl-icore-u-boot.dtsi
index f95d49d00d..12e46e38f6 100644
--- a/arch/arm/dts/imx6qdl-icore-u-boot.dtsi
+++ b/arch/arm/dts/imx6qdl-icore-u-boot.dtsi
@@ -5,6 +5,22 @@
#include "imx6qdl-u-boot.dtsi"
+&soc {
+ u-boot,dm-pre-reloc;
+};
+
+&aips1 {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl_uart4 {
+ u-boot,dm-pre-reloc;
+};
+
+&uart4 {
+ u-boot,dm-pre-reloc;
+};
+
&usdhc1 {
u-boot,dm-spl;
};
diff --git a/arch/arm/dts/imx6ul-isiot-u-boot.dtsi
b/arch/arm/dts/imx6ul-isiot-u-boot.dtsi
index aa8e9804bf..7213e71989 100644
--- a/arch/arm/dts/imx6ul-isiot-u-boot.dtsi
+++ b/arch/arm/dts/imx6ul-isiot-u-boot.dtsi
@@ -5,6 +5,22 @@
#include "imx6ul-u-boot.dtsi"
+&soc {
+ u-boot,dm-pre-reloc;
+};
+
+&aips1 {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl_uart1 {
+ u-boot,dm-pre-reloc;
+};
+
+&uart1 {
+ u-boot,dm-pre-reloc;
+};
+
&usdhc1 {
u-boot,dm-spl;
};
diff --git a/board/engicam/common/spl.c b/board/engicam/common/spl.c
index 6a0612481a..f1ccdc3343 100644
--- a/board/engicam/common/spl.c
+++ b/board/engicam/common/spl.c
@@ -26,20 +26,6 @@
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/video.h>
-#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
- PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
- PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
-
-static iomux_v3_cfg_t const uart_pads[] = {
-#ifdef CONFIG_MX6QDL
- IOMUX_PADS(PAD_KEY_COL0__UART4_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
- IOMUX_PADS(PAD_KEY_ROW0__UART4_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
-#elif CONFIG_MX6UL
- IOMUX_PADS(PAD_UART1_TX_DATA__UART1_DCE_TX |
MUX_PAD_CTRL(UART_PAD_CTRL)),
- IOMUX_PADS(PAD_UART1_RX_DATA__UART1_DCE_RX |
MUX_PAD_CTRL(UART_PAD_CTRL)),
-#endif
-};
-
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
@@ -421,12 +407,12 @@ void board_init_f(ulong dummy)
if (!(is_mx6ul()))
gpr_init();
- /* iomux */
- SETUP_IOMUX_PADS(uart_pads);
-
/* setup GP timer */
timer_init();
+ /* Enable device tree and early DM support*/
+ spl_early_init();
+
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
diff --git a/configs/imx6dl_icore_nand_defconfig
b/configs/imx6dl_icore_nand_defconfig
index fe4866e2f5..af5873a784 100644
--- a/configs/imx6dl_icore_nand_defconfig
+++ b/configs/imx6dl_icore_nand_defconfig
@@ -66,6 +66,7 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
CONFIG_IMX_THERMAL=y
CONFIG_VIDEO=y
diff --git a/configs/imx6q_icore_nand_defconfig
b/configs/imx6q_icore_nand_defconfig
index 2cb995e7ae..8535627049 100644
--- a/configs/imx6q_icore_nand_defconfig
+++ b/configs/imx6q_icore_nand_defconfig
@@ -67,6 +67,7 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
CONFIG_IMX_THERMAL=y
CONFIG_VIDEO=y
diff --git a/configs/imx6qdl_icore_mipi_defconfig
b/configs/imx6qdl_icore_mipi_defconfig
index 90eb153c45..8dd5e89511 100644
--- a/configs/imx6qdl_icore_mipi_defconfig
+++ b/configs/imx6qdl_icore_mipi_defconfig
@@ -74,5 +74,6 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
CONFIG_IMX_THERMAL=y
diff --git a/configs/imx6qdl_icore_mmc_defconfig
b/configs/imx6qdl_icore_mmc_defconfig
index 9f6d29a268..46497fbde1 100644
--- a/configs/imx6qdl_icore_mmc_defconfig
+++ b/configs/imx6qdl_icore_mmc_defconfig
@@ -90,6 +90,7 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
CONFIG_IMX_THERMAL=y
CONFIG_VIDEO=y
diff --git a/configs/imx6qdl_icore_nand_defconfig
b/configs/imx6qdl_icore_nand_defconfig
index 2cb995e7ae..8535627049 100644
--- a/configs/imx6qdl_icore_nand_defconfig
+++ b/configs/imx6qdl_icore_nand_defconfig
@@ -67,6 +67,7 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
CONFIG_IMX_THERMAL=y
CONFIG_VIDEO=y
diff --git a/configs/imx6qdl_icore_rqs_defconfig
b/configs/imx6qdl_icore_rqs_defconfig
index ee2c597bcb..3bab6739d0 100644
--- a/configs/imx6qdl_icore_rqs_defconfig
+++ b/configs/imx6qdl_icore_rqs_defconfig
@@ -72,4 +72,5 @@ CONFIG_FEC_MXC=y
CONFIG_MII=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_SERIAL=y
CONFIG_MXC_UART=y
--
2.25.1
