[U-Boot] [PATCH 3/5] arm64: zynqmp: spl: fix dual SD controller support

[Michal Simek]

From: Jean-Francois Dagenais <jeff.dagenais at gmail.com>

When enabling both SDHCI controllers, spl_mmc.c would actually choose
device sdhci0 even if booted from sdhci1 (boot_device). This is because
spl_mmc_get_device_index(boot_device) expects BOOT_DEVICE_MMC2[_2] in
order to return index 1 instead of 0.

The #if defined(...) statement is copied from board/xilinx/zynqmp/zynqmp.c

So the key to properly enabling both controllers as boot sources is
defining both CONFIG_ZYNQ_SDHCI0 and CONFIG_ZYNQ_SDHCI1 in your board's
include/configs/*.h.

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais at gmail.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 arch/arm/cpu/armv8/zynqmp/spl.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv8/zynqmp/spl.c b/arch/arm/cpu/armv8/zynqmp/spl.c
index a316ce557084..5ea731cd3018 100644
--- a/arch/arm/cpu/armv8/zynqmp/spl.c
+++ b/arch/arm/cpu/armv8/zynqmp/spl.c
@@ -83,10 +83,15 @@ u32 spl_boot_device(void)
 	case JTAG_MODE:
 		return BOOT_DEVICE_RAM;
 #ifdef CONFIG_SPL_MMC_SUPPORT
+	case SD_MODE1:
 	case SD1_LSHFT_MODE:
-	case EMMC_MODE:
+/* if both controllers enabled, then these two are the second controller */
+#if defined(CONFIG_ZYNQ_SDHCI0) && defined(CONFIG_ZYNQ_SDHCI1)
+		return BOOT_DEVICE_MMC2;
+/* else, fall through, the one SDHCI controller that is enabled is number 1 */
+#endif
 	case SD_MODE:
-	case SD_MODE1:
+	case EMMC_MODE:
 		return BOOT_DEVICE_MMC1;
 #endif
 #ifdef CONFIG_SPL_DFU_SUPPORT
@@ -116,6 +121,7 @@ u32 spl_boot_mode(const u32 boot_device)
 	case BOOT_DEVICE_RAM:
 		return 0;
 	case BOOT_DEVICE_MMC1:
+	case BOOT_DEVICE_MMC2:
 		return MMCSD_MODE_FS;
 	default:
 		puts("spl: error: unsupported device\n");
-- 
1.9.1