On Thu, Jun 26, 2014 at 4:51 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote: > Doug Anderson <dianders@xxxxxxxxxx> writes: > >> Tushar, >> >> On Tue, Jun 10, 2014 at 10:32 PM, Tushar Behera <tushar.b@xxxxxxxxxxx> wrote: >>> Currently CLK_FOUT_EPLL was set as one of the parents of AUDSS mux. >>> As per the user manual, it should be CLK_MAU_EPLL. >>> >>> The problem surfaced when the bootloader in Peach-pit board set >>> the EPLL clock as the parent of AUDSS mux. While booting the kernel, >>> we used to get a system hang during late boot if CLK_MAU_EPLL was >>> disabled. >>> >>> Signed-off-by: Tushar Behera <tushar.b@xxxxxxxxxxx> >>> Signed-off-by: Shaik Ameer Basha <shaik.ameer@xxxxxxxxxxx> >>> Reported-by: Kevin Hilman <khilman@xxxxxxxxxx> >>> --- >>> arch/arm/boot/dts/exynos5420.dtsi | 2 +- >>> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> I've tested this myself now as well. >> >> Tested-by: Doug Anderson <dianders@xxxxxxxxxxxx> > > For me, this patch alone (on top of -next) doesn't solve the boot hang. > I still need clk_ignore_unused for a successful boot. > > So, this patch might be correct, but it doesn't prevent a boot hang > using a chain-loaded nv_uboot on peach-pi. There's still another clock > being disabled that causes a hang. > > Kevin Kevin, Can you please check if adding patch 1/3 alongwith patch 2/3 fixes the issue for you? Also can you please confirm that setting CLK_IGNORE_UNUSED flag CLK_MAU_EPLL alone fixes the issue, without any need for clk_ignore_unused in u-boot bootargs? -- Tushar Behera -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
