diff options
| author | Ye Li <ye.li@nxp.com> | 2017-08-23 04:40:58 -0500 |
|---|---|---|
| committer | Ye Li <ye.li@nxp.com> | 2017-08-23 04:46:22 -0500 |
| commit | b6b4b9498a5b531f9173e60db6b9b8c2a76d6523 (patch) | |
| tree | 1b8b89501644b92b7876d378314235175bb52ec2 | |
| parent | 3150830e67eec1848654f5d76a89e7b33661ecf5 (diff) | |
MLK-16246 imx8mq_evk: Update DTB to disable DCSS and HDMI for mfgtool
When booting for mfgtool, we need to disable DCSS and HDMI since the HDMI
firmware won't be loaded by mfgtool. Add the detect in u-boot and update the
DTB.
Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
| -rw-r--r-- | arch/arm/cpu/armv8/imx8m/soc.c | 42 | ||||
| -rw-r--r-- | include/configs/imx8mq_evk.h | 2 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/imx8m/soc.c b/arch/arm/cpu/armv8/imx8m/soc.c index 65c5f9ff65..4bd8ec6386 100644 --- a/arch/arm/cpu/armv8/imx8m/soc.c +++ b/arch/arm/cpu/armv8/imx8m/soc.c @@ -12,6 +12,7 @@ #include <asm/imx-common/boot_mode.h> #include <asm/armv8/mmu.h> #include <errno.h> +#include <fdt_support.h> DECLARE_GLOBAL_DATA_PTR; @@ -365,3 +366,44 @@ void get_board_serial(struct tag_serialnr *serialnr) serialnr->high = 0; } #endif + +#ifdef CONFIG_OF_SYSTEM_SETUP +int ft_system_setup(void *blob, bd_t *bd) +{ + if (get_boot_device() == USB_BOOT) { + const char *nodes_path[] = { + "/dcss@32e00000", + "/hdmi@32c00000", + }; + + int i = 0; + int rc; + int nodeoff; + const char *status = "disabled"; + + for (i = 0; i < ARRAY_SIZE(nodes_path); i++) { + nodeoff = fdt_path_offset(blob, nodes_path[i]); + if (nodeoff < 0) + continue; /* Not found, skip it */ + + printf("Found %s node\n", nodes_path[i]); + +add_status: + rc = fdt_setprop(blob, nodeoff, "status", status, strlen(status) + 1); + if (rc) { + if (rc == -FDT_ERR_NOSPACE) { + rc = fdt_increase_size(blob, 512); + if (!rc) + goto add_status; + } + printf("Unable to update property %s:%s, err=%s\n", + nodes_path[i], "status", fdt_strerror(rc)); + } else { + printf("Modify %s:%s disabled\n", + nodes_path[i], "status"); + } + } + } + return 0; +} +#endif diff --git a/include/configs/imx8mq_evk.h b/include/configs/imx8mq_evk.h index fe8d775173..9dfba26b07 100644 --- a/include/configs/imx8mq_evk.h +++ b/include/configs/imx8mq_evk.h @@ -271,6 +271,8 @@ #define CONFIG_CMD_EXT2 #endif +#define CONFIG_OF_SYSTEM_SETUP + #if defined(CONFIG_ANDROID_SUPPORT) #include "imx8mq_evk_android.h" #endif |