[PATCH v2] rockchip: rk3576-rock-4d: Enable XMC SPI chip

The Radxa Rock 4D exists also with a different SPI flash chip than the
one specified in the schematic[1]: XMC XM25QU128C.
At least board revision V1.12 can be impacted.

Enable CONFIG_SPI_FLASH_XMC Kconfig options.

Without this SPL fails to probe the SPI flash and thus fails to load
U-Boot proper from it.

Vendor U-Boot also enables CONFIG_SPI_FLASH_GIGADEVICE and
CONFIG_SPI_FLASH_WINBOND so other hardware configuration might exist.
They are not enabled by this patch.

[1] https://dl.radxa.com/rock4/4d/docs/hw/Radxa_ROCK_4D_SCH_V1.12.pdf

Signed-off-by: Martin Herren <[email protected]>
---
Changes in v2:
- Clarify commit message to specifically mention SPI flash instead of
  just SPI
- Capitalize properly U-Boot
- Resend with non-patch-mangling smtp server
- Link to v1: https://patch.msgid.link/[email protected]

To: Simon Glass <[email protected]>
To: [email protected]
Cc: Jonas Karlman <[email protected]>
Cc: Quentin Schulz <[email protected]>
Cc: Kever Yang <[email protected]>
Cc: Tom Rini <[email protected]>
Cc: Martin Herren <[email protected]>
Cc: Alexey Charkov <[email protected]>
---
 configs/rock-4d-rk3576_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configs/rock-4d-rk3576_defconfig b/configs/rock-4d-rk3576_defconfig
index 7228a9d879a..93faf09962c 100644
--- a/configs/rock-4d-rk3576_defconfig
+++ b/configs/rock-4d-rk3576_defconfig
@@ -49,6 +49,7 @@ CONFIG_MMC_DW=y
 CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_SPI_FLASH_SFDP_SUPPORT=y
 CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_XMC=y
 CONFIG_DWC_ETH_QOS=y
 CONFIG_DWC_ETH_QOS_ROCKCHIP=y
 CONFIG_PHY_REALTEK=y

---
base-commit: 77bc0326456d9d6a83aa7adac201d1c97a008b61
change-id: 20260808-rk3576_radxa-rock-4_spi-9c241f4e29e5

Best regards,
--  
Martin Herren <[email protected]>