PLL4Q is supplying both FDCAN and LTDC. In case HDMI is in use, the 50 MHz generated from PLL4Q cannot be divided well enough to produce accurate clock for HDMI pixel clock. Adjust it to generate 74.25 MHz instead. The PLL4P/PLL4R are generating 99 MHz instead of 100 MHz, which is in tolerance for the SDMMC.
Signed-off-by: Marek Vasut <[email protected]> Cc: Gerald Baeza <[email protected]> Cc: Patrick Delaunay <[email protected]> Cc: Patrice Chotard <[email protected]> --- NOTE: Thanks to Gerald for this suggestion. --- arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi index 7529068c51..c73318488d 100644 --- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi +++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi @@ -132,11 +132,11 @@ u-boot,dm-pre-reloc; }; - /* VCO = 600.0 MHz => P = 100, Q = 50, R = 100 */ + /* VCO = 600.0 MHz => P = 99, Q = 74, R = 99 */ pll4: st,pll@3 { compatible = "st,stm32mp1-pll"; reg = <3>; - cfg = < 1 49 5 11 5 PQR(1,1,1) >; + cfg = < 3 98 5 7 5 PQR(1,1,1) >; u-boot,dm-pre-reloc; }; }; -- 2.28.0
