Re: [PATCH 7/8] arm64: tegra: Update AHUB clock parent and rate on Tegra234

From: Sameer Pujar
Date: Fri Jun 23 2023 - 00:51:55 EST




On 22-06-2023 17:43, Mark Brown wrote:
On Thu, Jun 22, 2023 at 05:04:15PM +0530, Sameer Pujar wrote:
From: Sheetal <sheetal@xxxxxxxxxx>

I2S data sanity tests fail beyond a bit clock frequency of 6.144MHz.
This happens because the AHUB clock rate is too low and it shows
9.83MHz on boot.

The maximum rate of PLLA_OUT0 is 49.152MHz and is used to serve I/O
clocks. It is recommended that AHUB clock operates higher than this.
Thus fix this by using PLLP_OUT0 as parent clock for AHUB instead of
PLLA_OUT0 and fix the rate to 81.6MHz.

Fixes: dc94a94daa39 ("arm64: tegra: Add audio devices on Tegra234")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Sheetal <sheetal@xxxxxxxxxx>
Fixes should come before cleanups in a patch series to ensure that they
can be applied and sent as fixes without dependencies on non-fixes.

I sorted the series based on the subsystem. Will make sure to put 'fixes' patch always first. Thanks.