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authorMichal Simek <michal.simek@xilinx.com>2014-02-24 11:16:31 +0100
committerTom Rini <trini@ti.com>2014-03-04 09:27:35 -0500
commit345d3c0f01172995da749fb9ac57faa8b639cfdc (patch)
treec01428250712b9aedb932a3261ca13894411939c
parentf88a6869a10a5a7aea4c4fda52db854a693796b0 (diff)
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mmc: zynq: Add OF initialization support
Enable initialize sdhci from DTB. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
-rw-r--r--arch/arm/include/asm/arch-zynq/sys_proto.h1
-rw-r--r--drivers/mmc/zynq_sdhci.c29
2 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-zynq/sys_proto.h b/arch/arm/include/asm/arch-zynq/sys_proto.h
index 0a2ba05..a68e1b3 100644
--- a/arch/arm/include/asm/arch-zynq/sys_proto.h
+++ b/arch/arm/include/asm/arch-zynq/sys_proto.h
@@ -19,5 +19,6 @@ extern void zynq_ddrc_init(void);
/* Driver extern functions */
extern int zynq_sdhci_init(u32 regbase);
+extern int zynq_sdhci_of_init(const void *blob);
#endif /* _SYS_PROTO_H_ */
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index 72a272f..fdce2c2 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -7,6 +7,8 @@
*/
#include <common.h>
+#include <fdtdec.h>
+#include <libfdt.h>
#include <malloc.h>
#include <sdhci.h>
#include <asm/arch/sys_proto.h>
@@ -32,3 +34,30 @@ int zynq_sdhci_init(u32 regbase)
add_sdhci(host, 52000000, 52000000 >> 9);
return 0;
}
+
+#ifdef CONFIG_OF_CONTROL
+int zynq_sdhci_of_init(const void *blob)
+{
+ int offset = 0;
+ u32 ret = 0;
+ u32 reg;
+
+ debug("ZYNQ SDHCI: Initialization\n");
+
+ do {
+ offset = fdt_node_offset_by_compatible(blob, offset,
+ "arasan,sdhci-8.9a");
+ if (offset != -1) {
+ reg = fdtdec_get_addr(blob, offset, "reg");
+ if (reg != FDT_ADDR_T_NONE) {
+ ret |= zynq_sdhci_init(reg);
+ } else {
+ debug("ZYNQ SDHCI: Can't get base address\n");
+ return -1;
+ }
+ }
+ } while (offset != -1);
+
+ return ret;
+}
+#endif