Doug Anderson [off-list ref] writes:
Tushar,
On Tue, Jun 10, 2014 at 10:32 PM, Tushar Behera [off-list ref] wrote:
quoted
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 <redacted>
Signed-off-by: Shaik Ameer Basha <redacted>
Reported-by: Kevin Hilman <redacted>
---
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@chromium.org>
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
On Thu, Jun 26, 2014 at 4:51 AM, Kevin Hilman [off-list ref] wrote:
Doug Anderson [off-list ref] writes:
quoted
Tushar,
On Tue, Jun 10, 2014 at 10:32 PM, Tushar Behera [off-list ref] wrote:
quoted
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 <redacted>
Signed-off-by: Shaik Ameer Basha <redacted>
Reported-by: Kevin Hilman <redacted>
---
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@chromium.org>
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