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authorFabio Estevam <festevam@gmail.com>2020-04-15 15:01:34 -0300
committerStefano Babic <sbabic@denx.de>2020-04-17 18:58:48 +0200
commit168fff26a88fe0bd9034beb8035f61b4c9460048 (patch)
treee99f3262fcb3b12fc681486872be26ce99ef8d11 /board
parent8f660ba7bb96e2ae69a521721d727ecf2fe16fba (diff)
imx8qxp_mek: Start with USDHC2 unpowered
After triggering a "reboot" command in Linux the following hang in SPL is observed: U-Boot SPL 2020.04 (Apr 15 2020 - 10:49:29 -0300) Normal Boot WDT: Not found! Trying to boot from MMC2_2 spl: mmc init failed with error: -70 SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ### This error happens because the CMD_ERR bit is set in the IRQ status register after booting from Linux. To ensure a fresh start, force the VMMC supply to get unpowered first. Signed-off-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'board')
-rw-r--r--board/freescale/imx8qxp_mek/spl.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/board/freescale/imx8qxp_mek/spl.c b/board/freescale/imx8qxp_mek/spl.c
index cb4006eb2a..e4e4cbe716 100644
--- a/board/freescale/imx8qxp_mek/spl.c
+++ b/board/freescale/imx8qxp_mek/spl.c
@@ -12,9 +12,24 @@
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/sci/sci.h>
+#include <asm/arch/imx8-pins.h>
+#include <asm/arch/iomux.h>
DECLARE_GLOBAL_DATA_PTR;
+#define GPIO_PAD_CTRL ((SC_PAD_CONFIG_NORMAL << PADRING_CONFIG_SHIFT) | \
+ (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \
+ (SC_PAD_28FDSOI_DSE_DV_HIGH << PADRING_DSE_SHIFT) | \
+ (SC_PAD_28FDSOI_PS_PU << PADRING_PULL_SHIFT))
+
+#define USDHC2_SD_PWR IMX_GPIO_NR(4, 19)
+static iomux_cfg_t usdhc2_sd_pwr[] = {
+ SC_P_USDHC1_RESET_B | MUX_PAD_CTRL(GPIO_PAD_CTRL),
+};
+
void spl_board_init(void)
{
struct udevice *dev;
@@ -32,6 +47,9 @@ void spl_board_init(void)
timer_init();
+ imx8_iomux_setup_multiple_pads(usdhc2_sd_pwr, ARRAY_SIZE(usdhc2_sd_pwr));
+ gpio_direction_output(USDHC2_SD_PWR, 0);
+
preloader_console_init();
puts("Normal Boot\n");