github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-21 13:27:57 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

phy: freescale: fsl-samsung-hdmi: Expand Integer divider range

Browse Source 
The Integer divder uses values of P,M, and S to determine the PLL
rate.  Currently, the range of M was set based on a series of
table entries where the range was limited.  Since the ref manual
shows it is 8-bit wide, expand the range to be up to 255.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/20241026132014.73050-1-aford173@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Adam Ford 2024-10-26 08:19:57 -05:00 committed by Vinod Koul
parent ba8ad7eece
commit 2a9868d69b
1 changed files with 5 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/phy/freescale/phy-fsl-samsung-hdmi.c
View File

@ -406,16 +406,15 @@ static unsigned long fsl_samsung_hdmi_phy_find_pms(unsigned long fout, u8 *p, u1
continue;
/*
* TODO: Ref Manual doesn't state the range of _m
* so this should be further refined if possible.
* This range was set based on the original values
* in the lookup table
* The Ref manual doesn't explicitly state the range of M,
* but it does show it as an 8-bit value, so reject
* any value above 255.
*/
tmp = (u64)fout * (_p * _s);
do_div(tmp, 24 * MHZ);
_m = tmp;
if (_m < 0x30 || _m > 0x7b)
if (tmp > 255)
continue;
_m = tmp;
/*
* Rev 2 of the Ref Manual states the