[PATCH v2 20/40] mmc: exynos_dw_mmc: Don't call pinmux functions on ARM64 chips

[Sam Protsenko]

Pinmux configuration on ARM64 platforms must be performed during startup
in pinctrl driver using info from device tree. exynos_pinmux_config()
and pinmux_decode_periph_id() are only available on ARM32 platforms, so
don't call those functions on ARM64 platforms. Instead of the latter
function, use "non-removable" property from device tree to derive the
dev_index value.

This fixes next linking errors on ARM64 platforms:

    ld: drivers/mmc/exynos_dw_mmc.o:
      in function `exynos_dwmci_get_config':
      undefined reference to `pinmux_decode_periph_id'
    ld: drivers/mmc/exynos_dw_mmc.o:
      in function `do_dwmci_init':
      undefined reference to `exynos_pinmux_config'

Fixes: a082a2dde061 ("EXYNOS5: DWMMC: Added FDT support for DWMMC")
Signed-off-by: Sam Protsenko <semen.protsenko at linaro.org>
---
Changes in v2:
  - Replaced CONFIG_IS_ENABLED() with #ifdef

 drivers/mmc/exynos_dw_mmc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
index 8e80bd6a059f..2ed8429d0a40 100644
--- a/drivers/mmc/exynos_dw_mmc.c
+++ b/drivers/mmc/exynos_dw_mmc.c
@@ -145,6 +145,7 @@ static int exynos_dwmci_core_init(struct dwmci_host *host)
 
 static int do_dwmci_init(struct dwmci_host *host)
 {
+#ifdef CONFIG_CPU_V7A
 	int flag, err;
 
 	flag = host->buswidth == 8 ? PINMUX_FLAG_8BIT_MODE : PINMUX_FLAG_NONE;
@@ -153,6 +154,7 @@ static int do_dwmci_init(struct dwmci_host *host)
 		printf("DWMMC%d not configure\n", host->dev_index);
 		return err;
 	}
+#endif
 
 	return exynos_dwmci_core_init(host);
 }
@@ -164,6 +166,7 @@ static int exynos_dwmci_get_config(struct udevice *dev, const void *blob,
 	int err = 0;
 	u32 timing[3];
 
+#ifdef CONFIG_CPU_V7A
 	/* Extract device id for each mmc channel */
 	host->dev_id = pinmux_decode_periph_id(blob, node);
 
@@ -175,6 +178,12 @@ static int exynos_dwmci_get_config(struct udevice *dev, const void *blob,
 		printf("DWMMC%d: Can't get the dev index\n", host->dev_index);
 		return -EINVAL;
 	}
+#else
+	if (dev_read_bool(dev, "non-removable"))
+		host->dev_index = 0; /* eMMC */
+	else
+		host->dev_index = 2; /* SD card */
+#endif
 
 	/* Get the bus width from the device node (Default is 4bit buswidth) */
 	host->buswidth = fdtdec_get_int(blob, node, "samsung,bus-width", 4);
-- 
2.39.2