Commit 2a9868d6 authored by Adam Ford's avatar Adam Ford Committed by Vinod Koul
Browse files

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



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: default avatarAdam Ford <aford173@gmail.com>
Reviewed-by: default avatarFrieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/20241026132014.73050-1-aford173@gmail.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent ba8ad7ee

drivers/phy/freescale/phy-fsl-samsung-hdmi.c

+5 −6
Original line number Diff line number Diff line
@@ -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