[PATCH 8/8] mci: imx-esdhc: Add layerscape support

[Sascha Hauer <s.hauer@pengutronix.de>]

This adds support for the esdhc controller found on Layerscape SoCs.
This means adding the compatible and a driver data to access the
controller in bigendian mode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/mci/Kconfig     |  2 +-
 drivers/mci/imx-esdhc.c | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/mci/Kconfig b/drivers/mci/Kconfig
index 954f957bc7..2075151d67 100644
--- a/drivers/mci/Kconfig
+++ b/drivers/mci/Kconfig
@@ -82,7 +82,7 @@ config MCI_IMX
 
 config MCI_IMX_ESDHC
 	bool "i.MX esdhc"
-	depends on ARCH_IMX
+	depends on ARCH_IMX || ARCH_LAYERSCAPE
 	help
 	  Enable this entry to add support to read and write SD cards on a
 	  Freescale i.MX25/35/51 based system.
diff --git a/drivers/mci/imx-esdhc.c b/drivers/mci/imx-esdhc.c
index 58c262782f..10c981ad5d 100644
--- a/drivers/mci/imx-esdhc.c
+++ b/drivers/mci/imx-esdhc.c
@@ -69,6 +69,8 @@
 #define ESDHC_FLAG_HAVE_CAP1		BIT(6)
 /* Need to access registers in bigendian mode */
 #define ESDHC_FLAG_BIGENDIAN		BIT(7)
+/* Enable cache snooping */
+#define ESDHC_FLAG_CACHE_SNOOPING	BIT(8)
 
 /*
  * The IP has errata ERR004536
@@ -612,6 +614,10 @@ static int esdhc_init(struct mci_host *mci, struct device_d *dev)
 	/* RSTA doesn't reset MMC_BOOT register, so manually reset it */
 	esdhc_write32(host, SDHCI_MMC_BOOT, 0);
 
+	/* Enable cache snooping */
+	if (host->socdata->flags & ESDHC_FLAG_CACHE_SNOOPING)
+		esdhc_write32(host, 0x40c, 0x40);
+
 	/* Set the initial clock speed */
 	set_sysctl(mci, 400000);
 
@@ -747,6 +753,10 @@ static struct esdhc_soc_data usdhc_imx6sx_data = {
 	.clkidx = "per",
 };
 
+static struct esdhc_soc_data esdhc_ls_data = {
+	.flags = ESDHC_FLAG_MULTIBLK_NO_INT | ESDHC_FLAG_BIGENDIAN,
+};
+
 static __maybe_unused struct of_device_id fsl_esdhc_compatible[] = {
 	{ .compatible = "fsl,imx25-esdhc",  .data = &esdhc_imx25_data  },
 	{ .compatible = "fsl,imx50-esdhc",  .data = &esdhc_imx53_data  },
@@ -756,6 +766,7 @@ static __maybe_unused struct of_device_id fsl_esdhc_compatible[] = {
 	{ .compatible = "fsl,imx6sl-usdhc", .data = &usdhc_imx6sl_data },
 	{ .compatible = "fsl,imx6sx-usdhc", .data = &usdhc_imx6sx_data },
 	{ .compatible = "fsl,imx8mq-usdhc", .data = &usdhc_imx6sx_data },
+	{ .compatible = "fsl,ls1046a-esdhc",.data = &esdhc_ls_data  },
 	{ /* sentinel */ }
 };
 
-- 
2.20.1


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