board: phytec: phycore-imx93: Fix EEPROM bus mismatch in SPL

Fix PHYTEC EEPROM bus mismatch between SPL and U-Boot proper by enabling
CONFIG_SPL_DM_SEQ_ALIAS=y on phyCORE-i.MX93 boards. This way, both the
SPL and U-Boot proper will respect the device-tree aliases for I2C devs
and use the same I2C bus number for phytec_eeprom_data_setup() function
calls. This makes code less confusing and more robust.

Fixes an issue apparent since commit 79f3e77133bd ("Subtree merge tag
'v6.16-dts' of dts repo [1] into dts/upstream") where SPL would spew the
following error:

  phytec_eeprom_read: i2c EEPROM not found: -110.
  phytec_eeprom_data_setup: EEPROM data init failed

While later in U-Boot proper, EEPROM would be successfully read out.
This happens because Linux device-tree for phyBOARD-Segin-i.MX93 since
aforementioned commit enables I2C bus 2 (lpi2c2 is used for audio codec
and RTC) which breaks SPL I2C bus number ordering and I2C EEPROM bus is
shifted by +1. Now, lets prevent this from happening again by utilizing
device-tree aliases also in the SPL.

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>

diff --git a/board/phytec/phycore_imx93/spl.c b/board/phytec/phycore_imx93/spl.c
index 7b5d38d..beaa536 100644 (file)
--- a/board/phytec/phycore_imx93/spl.c
+++ b/board/phytec/phycore_imx93/spl.c
@@ -52,8 +52,7 @@ void spl_dram_init(void)
        int ret;
        enum phytec_imx93_ddr_eeprom_code ddr_opt = PHYTEC_IMX93_DDR_INVALID;
 
-       /* NOTE: In SPL lpi2c3 is mapped to bus 0 */
-       ret = phytec_eeprom_data_setup(NULL, 0, EEPROM_ADDR);
+       ret = phytec_eeprom_data_setup(NULL, 2, EEPROM_ADDR);
        if (ret && !IS_ENABLED(CONFIG_PHYCORE_IMX93_RAM_TYPE_FIX))
                goto out;
 

diff --git a/configs/imx93-phycore_defconfig b/configs/imx93-phycore_defconfig
index 6210be6..af14912 100644 (file)
--- a/configs/imx93-phycore_defconfig
+++ b/configs/imx93-phycore_defconfig
@@ -92,6 +92,7 @@ CONFIG_USE_ETHPRIME=y
 CONFIG_ETHPRIME="eth1"
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPL_DM=y
+CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SPL_CLK_IMX93=y
 CONFIG_CLK_IMX93=y
 CONFIG_DFU_MMC=y