fsl_esdhc: add support for mx51 processor
The esdhc controller in the mx51 processor is quite
the same as the one in some powerpc processors
(MPC83xx, MPC85xx). This patches adapts the driver
to support the arm mx51.
Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/include/asm-arm/global_data.h b/include/asm-arm/global_data.h
index 8115a24..02cfe45 100644
--- a/include/asm-arm/global_data.h
+++ b/include/asm-arm/global_data.h
@@ -44,6 +44,9 @@
#ifdef CONFIG_VFD
unsigned char vfd_type; /* display type */
#endif
+#ifdef CONFIG_FSL_ESDHC
+ unsigned long sdhc_clk;
+#endif
#if 0
unsigned long cpu_clk; /* CPU clock in Hz! */
unsigned long bus_clk;
diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
index eac6a2b..01b7dec 100644
--- a/include/fsl_esdhc.h
+++ b/include/fsl_esdhc.h
@@ -27,12 +27,15 @@
#define __FSL_ESDHC_H__
#include <asm/errno.h>
+#include <asm/byteorder.h>
/* FSL eSDHC-specific constants */
#define SYSCTL 0x0002e02c
#define SYSCTL_INITA 0x08000000
#define SYSCTL_TIMEOUT_MASK 0x000f0000
#define SYSCTL_CLOCK_MASK 0x0000fff0
+#define SYSCTL_RSTA 0x01000000
+#define SYSCTL_CKEN 0x00000008
#define SYSCTL_PEREN 0x00000004
#define SYSCTL_HCKEN 0x00000002
#define SYSCTL_IPGEN 0x00000001
@@ -142,8 +145,32 @@
#define ESDHC_HOSTCAPBLT_DMAS 0x00400000
#define ESDHC_HOSTCAPBLT_HSS 0x00200000
+struct fsl_esdhc_cfg {
+ u32 esdhc_base;
+ u32 no_snoop;
+ u32 clk_enable;
+};
+
+/* Select the correct accessors depending on endianess */
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define esdhc_read32 in_le32
+#define esdhc_write32 out_le32
+#define esdhc_clrsetbits32 clrsetbits_le32
+#define esdhc_clrbits32 clrbits_le32
+#define esdhc_setbits32 setbits_le32
+#elif __BYTE_ORDER == __BIG_ENDIAN
+#define esdhc_read32 in_be32
+#define esdhc_write32 out_be32
+#define esdhc_clrsetbits32 clrsetbits_be32
+#define esdhc_clrbits32 clrbits_be32
+#define esdhc_setbits32 setbits_be32
+#else
+#error "Endianess is not defined: please fix to continue"
+#endif
+
#ifdef CONFIG_FSL_ESDHC
int fsl_esdhc_mmc_init(bd_t *bis);
+int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg);
void fdt_fixup_esdhc(void *blob, bd_t *bd);
#else
static inline int fsl_esdhc_mmc_init(bd_t *bis) { return -ENOSYS; }