Tushar Behera wrote:
>
> On Wednesday 31 August 2011 06:31 AM, Kukjin Kim wrote:
> > Tushar Behera wrote:
> >>
> >> Platform data for SDHCI controller on ORIGEN board is missing the
> >> support for 8-bit bus width. The platform data is extended in sync
> >> with other EXYNOS4 machines.
> >>
> >> Signed-off-by: Tushar Behera<tushar.behera@xxxxxxxxxx>
> >> ---
> >> arch/arm/mach-exynos4/mach-origen.c | 8 ++++++++
> >> 1 files changed, 8 insertions(+), 0 deletions(-)
> >>
> >> diff --git a/arch/arm/mach-exynos4/mach-origen.c
> > b/arch/arm/mach-exynos4/mach-
> >> origen.c
> >> index ae18812..6b6cd77 100644
> >> --- a/arch/arm/mach-exynos4/mach-origen.c
> >> +++ b/arch/arm/mach-exynos4/mach-origen.c
> >> @@ -75,11 +75,19 @@ static struct s3c2410_uartcfg origen_uartcfgs[]
> > __initdata =
> >> {
> >> static struct s3c_sdhci_platdata origen_hsmmc0_pdata __initdata = {
> >> .cd_type = S3C_SDHCI_CD_INTERNAL,
> >> .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL,
> >> +#ifdef CONFIG_EXYNOS4_SDHCI_CH0_8BIT
> >> + .max_width = 8,
> >> + .host_caps = MMC_CAP_8_BIT_DATA,
> >> +#endif
> >> };
> >>
> >> static struct s3c_sdhci_platdata origen_hsmmc2_pdata __initdata = {
> >> .cd_type = S3C_SDHCI_CD_INTERNAL,
> >> .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL,
> >> +#ifdef CONFIG_EXYNOS4_SDHCI_CH2_8BIT
> >> + .max_width = 8,
> >> + .host_caps = MMC_CAP_8_BIT_DATA,
> >> +#endif
> >> };
> >>
> >> static struct platform_device *origen_devices[] __initdata = {
> >> --
> >> 1.7.4.1
> >
> > Hi Tushar,
> >
> > I wonder the bus width of SDHCI controller can be changed manually on
ORIGEN
> > like SMDK board.
> >
> Thanks for your review.
>
> On ORIGEN board, we have wire connections for HSMMC-0/2/3 between the
> MMC port and the SoC. Hence ideally we can work with HSMMC2 in both
> 4-bit and 8-bit mode. However HSMMC0 can only work in 4-bit mode.
>
> Also IIRC WLAN would be using HSMMC-3 controller for its operations. So
> we would have conflict when HSMMC2 is working in 8-bit mode and WLAN is
> also enabled. Hence it appears better to drop this patch now.
>
OK.
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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