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fsl_esdhc: Add device tree fixups

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This patch implements fdt_fixup_esdhc() function that is used to fixup
the device tree.

The function adds status = "disabled" propery if esdhc pins muxed away,
otherwise it fixups clock-frequency for esdhc nodes.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Anton Vorontsov 2009-06-10 00:25:29 +04:00 • committed by Wolfgang Denk
parent 93f9dcf9e8
commit b33433a63f
2 changed files with 27 additions and 0 deletions
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19
drivers/mmc/fsl_esdhc.c
View file

@ -28,11 +28,13 @@
#include <config.h>
#include <common.h>
#include <command.h>
#include <hwconfig.h>
#include <mmc.h>
#include <part.h>
#include <malloc.h>
#include <mmc.h>
#include <fsl_esdhc.h>
#include <fdt_support.h>
#include <asm/io.h>
@ -346,3 +348,20 @@ int fsl_esdhc_mmc_init(bd_t *bis)
{
return esdhc_initialize(bis);
}
void fdt_fixup_esdhc(void *blob, bd_t *bd)
{
const char *compat = "fsl,esdhc";
const char *status = "okay";
if (!hwconfig("esdhc")) {
status = "disabled";
goto out;
}
do_fixup_by_compat_u32(blob, compat, "clock-frequency",
gd->sdhc_clk, 1);
out:
do_fixup_by_compat(blob, compat, "status", status,
strlen(status) + 1, 1);
}

8
include/fsl_esdhc.h
View file

@ -26,6 +26,8 @@
#ifndef __FSL_ESDHC_H__
#define __FSL_ESDHC_H__
#include <asm/errno.h>
/* FSL eSDHC-specific constants */
#define SYSCTL 0x0002e02c
#define SYSCTL_INITA 0x08000000
@ -140,6 +142,12 @@
#define ESDHC_HOSTCAPBLT_DMAS 0x00400000
#define ESDHC_HOSTCAPBLT_HSS 0x00200000
#ifdef CONFIG_FSL_ESDHC
int fsl_esdhc_mmc_init(bd_t *bis);
void fdt_fixup_esdhc(void *blob, bd_t *bd);
#else
static inline int fsl_esdhc_mmc_init(bd_t *bis) { return -ENOSYS; }
static inline void fdt_fixup_esdhc(void *blob, bd_t *bd) {}
#endif /* CONFIG_FSL_ESDHC */
#endif /* __FSL_ESDHC_H__ */