Thread (8 messages) 8 messages, 3 authors, 2021-09-01

RE: [PATCH 1/1] clk:aspeed:Fix AST2600 hpll calculate formula

From: Ryan Chen <ryan_chen@aspeedtech.com>
Date: 2021-09-01 05:59:40
Also in: lkml

-----Original Message-----
From: Stephen Boyd <sboyd@kernel.org>
Sent: Sunday, August 29, 2021 12:37 PM
To: Andrew Jeffery <redacted>; Joel Stanley <joel@jms.id.au>; Michael
Turquette [off-list ref]; BMC-SW
[off-list ref]; linux-clk@vger.kernel.org;
linux-kernel@vger.kernel.org; Ryan Chen [off-list ref]
Subject: Re: [PATCH 1/1] clk:aspeed:Fix AST2600 hpll calculate formula

Quoting Ryan Chen (2021-08-18 01:05:18)
quoted
AST2600 HPLL calculate formula [SCU200] HPLL Numerator(M): have fixed
value depend on SCU strap.
M = SCU500[10] ? 0x5F : SCU500[8] ? 0xBF : SCU200[12:0]

if SCU500[10] = 1, M=0x5F.
else if SCU500[10]=0 & SCU500[8]=1, M=0xBF.
others (SCU510[10]=0 and SCU510[8]=0)
depend on SCU200[12:0] (default 0x8F) register setting.

HPLL Denumerator (N) =  SCU200[18:13] (default 0x2)
HPLL Divider (P)         =      SCU200[22:19] (default 0x0)

Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Any Fixes tag? Joel, can you review?
Hello Joel,

Should I apply to this tag? d3d04f6c330a
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help