[PATCH v4 1/6] rockchip: ringneck-px30: do not hardcode MMC controller paths

[Quentin Schulz]

From: Quentin Schulz <quentin.schulz at theobroma-systems.com>

To prepare to put the similar logic around storage medium selection for
Ringneck PX30 and Puma RK3399 in common, let's not use hardcoded paths
but use uclass functions instead to find udevice based on their DT node
full path.

Cc: Quentin Schulz <foss+uboot at 0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz at theobroma-systems.com>
---
 .../ringneck_px30/ringneck-px30.c                  | 37 +++++++++++++++-------
 1 file changed, 25 insertions(+), 12 deletions(-)

diff --git a/board/theobroma-systems/ringneck_px30/ringneck-px30.c b/board/theobroma-systems/ringneck_px30/ringneck-px30.c
index 537ce0d1d11..5d2c76ab902 100644
--- a/board/theobroma-systems/ringneck_px30/ringneck-px30.c
+++ b/board/theobroma-systems/ringneck_px30/ringneck-px30.c
@@ -68,11 +68,16 @@ static int setup_boottargets(void)
 	 * Make the default boot medium between SD Card and eMMC, the one that
 	 * was used to load U-Boot proper.
 	 */
-	bool sd_booted = !strcmp(boot_device, "/mmc at ff370000");
+	struct udevice *devp;
+
+	if (uclass_find_device_by_ofnode(UCLASS_MMC, ofnode_path(boot_device), &devp)) {
+		debug("%s: not reordering boot_targets, bootdev %s != MMC\n",
+		      __func__, boot_device);
+		return 0;
+	}
+
 	char *mmc0, *mmc1;
 
-	debug("%s: booted from %s\n", __func__,
-	      sd_booted ? "SD-Card" : "eMMC");
 	mmc0 = strstr(env, "mmc0");
 	mmc1 = strstr(env, "mmc1");
 
@@ -87,8 +92,8 @@ static int setup_boottargets(void)
 	 * If mmc1 comes first in the boot order and U-Boot proper was
 	 * loaded from mmc0, swap mmc0 and mmc1 in the list.
 	 */
-	if ((mmc0 < mmc1 && sd_booted) ||
-	    (mmc0 > mmc1 && !sd_booted)) {
+	if ((mmc0 < mmc1 && devp->seq_ == 1) ||
+	    (mmc0 > mmc1 && devp->seq_ == 0)) {
 		mmc0[3] = '1';
 		mmc1[3] = '0';
 		debug("%s: set boot_targets to: %s\n", __func__, env);
@@ -102,28 +107,37 @@ int mmc_get_env_dev(void)
 {
 	const char *boot_device =
 		ofnode_read_chosen_string("u-boot,spl-boot-device");
+	struct udevice *devp;
 
 	if (!boot_device) {
 		debug("%s: /chosen/u-boot,spl-boot-device not set\n",
 		      __func__);
+#ifdef CONFIG_SYS_MMC_ENV_DEV
 		return CONFIG_SYS_MMC_ENV_DEV;
+#else
+		return 0;
+#endif
 	}
 
 	debug("%s: booted from %s\n", __func__, boot_device);
 
-	if (!strcmp(boot_device, "/mmc at ff370000"))
-		return 1;
-
-	if (!strcmp(boot_device, "/mmc at ff390000"))
+	if (uclass_find_device_by_ofnode(UCLASS_MMC, ofnode_path(boot_device), &devp))
+#ifdef CONFIG_SYS_MMC_ENV_DEV
+		return CONFIG_SYS_MMC_ENV_DEV;
+#else
 		return 0;
+#endif
+
+	debug("%s: get MMC ENV from mmc%d\n", __func__, devp->seq_);
 
-	return CONFIG_SYS_MMC_ENV_DEV;
+	return devp->seq_;
 }
 
 enum env_location arch_env_get_location(enum env_operation op, int prio)
 {
 	const char *boot_device =
 		ofnode_read_chosen_string("u-boot,spl-boot-device");
+	struct udevice *devp;
 
 	if (prio > 0)
 		return ENVL_UNKNOWN;
@@ -137,8 +151,7 @@ enum env_location arch_env_get_location(enum env_operation op, int prio)
 	debug("%s: booted from %s\n", __func__, boot_device);
 
 	if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC) &&
-	    (!strcmp(boot_device, "/mmc at ff370000") ||
-	     !strcmp(boot_device, "/mmc at ff390000")))
+	    !uclass_find_device_by_ofnode(UCLASS_MMC, ofnode_path(boot_device), &devp))
 		return ENVL_MMC;
 
 	printf("%s: No environment available: booted from %s but U-Boot "

-- 
2.43.0