Message ID | 1339681473-2435-1-git-send-email-dirk.behme@de.bosch.com |
---|---|
State | Accepted |
Commit | 5c23712dbdeeaef84ee28a18dc23abd479a95ede |
Delegated to: | Stefano Babic |
Headers | show |
On 14/06/2012 15:44, Dirk Behme wrote: > From: Michael Langer <michael.langer@de.bosch.com> > > The commit "i.mx: fsl_esdhc: add the i.mx6q support" (4692708d) introduces > support for the i.MX6Q MMC host controller USDHC. > > MXC_IPG_PERCLK sets the clock to 66MHz. This seems to be the default clock > of the ESDHC IP found in < i.MX6 silicon. However, the default clock for the USDHC > IP found in i.MX6 is 200MHz (MXC_ESDHC_CLK). This difference will cause a 3 times > higher clock on SD_CLK than expected (see fsl_esdh.c -> set_sysctl()). > > Signed-off-by: Michael Langer <michael.langer@de.bosch.com> > CC: Stefano Babic <sbabic@denx.de> > CC: Jason Liu <r64343@freescale.com> > --- > arch/arm/cpu/armv7/imx-common/speed.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/cpu/armv7/imx-common/speed.c b/arch/arm/cpu/armv7/imx-common/speed.c > index 2187e8e..80989c4 100644 > --- a/arch/arm/cpu/armv7/imx-common/speed.c > +++ b/arch/arm/cpu/armv7/imx-common/speed.c > @@ -35,7 +35,11 @@ DECLARE_GLOBAL_DATA_PTR; > int get_clocks(void) > { > #ifdef CONFIG_FSL_ESDHC > +#ifdef CONFIG_FSL_USDHC > + gd->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); > +#else > gd->sdhc_clk = mxc_get_clock(MXC_IPG_PERCLK); > #endif > +#endif > return 0; > } Acked-by: Stefano Babic <sbabic@denx.de> Best regards, Stefano Babic
On 14/06/2012 15:44, Dirk Behme wrote: > From: Michael Langer <michael.langer@de.bosch.com> > > The commit "i.mx: fsl_esdhc: add the i.mx6q support" (4692708d) introduces > support for the i.MX6Q MMC host controller USDHC. > > MXC_IPG_PERCLK sets the clock to 66MHz. This seems to be the default clock > of the ESDHC IP found in < i.MX6 silicon. However, the default clock for the USDHC > IP found in i.MX6 is 200MHz (MXC_ESDHC_CLK). This difference will cause a 3 times > higher clock on SD_CLK than expected (see fsl_esdh.c -> set_sysctl()). > > Signed-off-by: Michael Langer <michael.langer@de.bosch.com> > CC: Stefano Babic <sbabic@denx.de> > CC: Jason Liu <r64343@freescale.com> > --- Applied to u-boot-imx, thanks. Best regards, Stefano Babic
diff --git a/arch/arm/cpu/armv7/imx-common/speed.c b/arch/arm/cpu/armv7/imx-common/speed.c index 2187e8e..80989c4 100644 --- a/arch/arm/cpu/armv7/imx-common/speed.c +++ b/arch/arm/cpu/armv7/imx-common/speed.c @@ -35,7 +35,11 @@ DECLARE_GLOBAL_DATA_PTR; int get_clocks(void) { #ifdef CONFIG_FSL_ESDHC +#ifdef CONFIG_FSL_USDHC + gd->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK); +#else gd->sdhc_clk = mxc_get_clock(MXC_IPG_PERCLK); #endif +#endif return 0; }