mmc: sh_mmcif: revision-specific CLK_CTRL2 handling
Some newer MMCIF IP revisions contain a CE_CLK_CTRL2 register, that has to
be set for proper operation. Support for this feature is added in a way to
preserve the current behaviour by default, i.e. when it is not enabled
in platform data. Patch is based on work by Nobuyuki HIRAI.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/sh_mmcif.h b/include/linux/mmc/sh_mmcif.h
index 197ed91..ccd8fb2 100644
--- a/include/linux/mmc/sh_mmcif.h
+++ b/include/linux/mmc/sh_mmcif.h
@@ -37,6 +37,7 @@
unsigned int slave_id_rx;
bool use_cd_gpio : 1;
bool ccs_unsupported : 1;
+ bool clk_ctrl2_present : 1;
unsigned int cd_gpio;
u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */
unsigned long caps;
@@ -60,6 +61,7 @@
#define MMCIF_CE_INT_MASK 0x00000044
#define MMCIF_CE_HOST_STS1 0x00000048
#define MMCIF_CE_HOST_STS2 0x0000004C
+#define MMCIF_CE_CLK_CTRL2 0x00000070
#define MMCIF_CE_VERSION 0x0000007C
/* CE_BUF_ACC */