Re: [PATCH v4] arm64: dts: imx8mq: Init rates and parents configs for clocks
From: Leonard Crestez <hidden>
Date: 2019-10-23 08:38:42
Also in:
linux-arm-kernel, linux-clk, lkml
On 2019-10-23 9:29 AM, Viorel Suman wrote:
On Mi, 2019-08-21 at 20:39 +0000, Leonard Crestez wrote:quoted
The audio PLLs should run below 650 mHz so please use 393216000 and 361267200 instead of 786432000 and 722534400. For the 8mm equivalent see commit 053a4ffe2988 ("clk: imx: imx8mm: fix audio pll setting").Hi Leonard, Audio PLL IP on 8mm and 8mn is different than the Audio PLL IP on 8mq, so the requirement to run below 650 MHZ may not apply to 8mq.
This "max 650mHz" limit is from internal ADD and is also mentioned for imx8mq. Peng: you made the change in our internal tree, can you confirm this requirement also applies to 8mq? Viorel: Is there any impact from 393216000 vs 786432000 on PLL on audio? As far as I can know this rate goes through various dividers anyway. -- Regards, Leonard