Hi Sachin, On Mon, Apr 28, 2014 at 05:30:19AM +0100, Sachin Kamat wrote: > On 26 April 2014 16:49, Kukjin Kim <kgene.kim@xxxxxxxxxxx> wrote: > > Javi Merino wrote: > >> > >> On Fri, Apr 25, 2014 at 09:35:35PM +0100, Tomasz Figa wrote: > >> > On 25.04.2014 22:30, Javi Merino wrote: > >> > > On Fri, Apr 25, 2014 at 09:16:30PM +0100, Tomasz Figa wrote: > >> > >> On 25.04.2014 22:11, Javi Merino wrote: > >> > >>> d726ca2d3316 (ARM: dts: Add vmmc-supply to MMC on arndale-octa board) > >> > >>> added the vmmc-supply to nodes mmc@12200000 and mmc@12220000 of the > >> > >>> DT. However, this makes the kernel fail to boot on the arndale-octa > >> > >>> spews: > >> > >>> > >> > >>> [ 5.060000] dwmmc_exynos 12200000.mmc: num-slots property not > >> found, assuming 1 slot is available > >> > >>> [ 5.065000] platform 12200000.mmc: Driver dwmmc_exynos requests > >> probe deferral > >> > >>> [ 5.075000] dwmmc_exynos 12220000.mmc: num-slots property not > >> found, assuming 1 slot is available > >> > >>> [ 5.085000] platform 12220000.mmc: Driver dwmmc_exynos requests > >> probe deferral > >> > >>> > >> > >>> And eventually hangs. Without the vmmc-supply property in the > >> > >>> mmc@12220000 node, the kernel boots again. > >> > >>> > >> > >>> Signed-off-by: Javi Merino <javi.merino@xxxxxxx> > >> > >>> --- > >> > >>> > >> > >>> Hi, > >> > >>> > >> > >>> Note that I don't know *why* removing the property works, all I know > >> > >>> is that 3.15-rc2 fails to boot on my Arndale Octa unless I apply > >> this > >> > >>> patch. > >> > >> > >> > >> Are you sure you have the required PMIC driver enabled in your kernel > >> > >> config? > >> > > > >> > > I configured the kernel using exynos_defconfig and that gives me: > >> > > > >> > > # CONFIG_PMIC_ADP5520 is not set > >> > > # CONFIG_PMIC_DA903X is not set > >> > > > >> > > Should I be using other defconfig for this board? exynos_defconfig > >> > > used to work in 3.14. Cheers, > >> > > >> > Well, unfortunately exynos_defconfig is known to be far from being > >> > reasonable. Right now it should be considered just as a base to > >> > configure the kernel for Exynos SoCs. Most of board specific options > >> > (and many of SoC-wide ones) need to be selected manually. > >> > > >> > Anyway, with the number of Exynos boards supported in mainline, I don't > >> > think we will be ever going to enable all options for all the supported > >> > boards by default in defconfig, especially considering the fact that we > >> > will be moving to generic multi_v7_defconfig and likely dropping > >> > exynos_defconfig completely. > > > > Well, keeping exynos_defconfig would be helpful even if exynos multiplatform is available. Please see the case of omap2plus_defconfig? > > > >> > > >> > As for now, I believe you should just make sure yourself that any > >> > options relevant to your board are enabled. > >> > >> Great. And I assume that there isn't a list of those options in the > >> web. So how do I know what options are relevant to my board? By > >> sending emails to linux-samsung-soc whenever it fails to boot? > >> > > I think, we need to enable all of regarding configs for each exynos boards so that exynos_defconfig can cover whenever. > > You need the following patch to mount the MMC. Without this the regulator will > not be enabled which is required by MMC. > > ARM: exynos_defconfig: Enable HS-I2C > http://permalink.gmane.org/gmane.linux.kernel.samsung-soc/27527 Yes, that's the bit that I was missing. With that patch 3.15-rc2 boots on my Arndale Octa. > Kukjin, can you please apply this patch? You can add my Tested-by for Arndale Octa. Thanks! Javi -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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