diff options
| author | Adam Ford <aford173@gmail.com> | 2023-11-27 22:54:15 -0600 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2023-12-06 10:16:33 +0800 |
| commit | a0deedcc0cf0631c7856c16109ee6f08845956c0 (patch) | |
| tree | 29c82f0f08a6426b7a8e450b716856257a755307 /arch/arm64/boot/dts/freescale/imx8mm.dtsi | |
| parent | 5b28b39dda772e7acc52f02c907aa5497c93e280 (diff) | |
arm64: dts: imx8mm: Slow default video_pll1 clock rate
Since commit 8208181fe536 ("clk: imx: composite-8m:
Add imx8m_divider_determine_rate") the lcdif controller has
had the ability to set the lcdif_pixel rate which propagates
up the tree and sets the video_pll1 rate automatically.
By setting this value low, it will force the recalculation of
video_pll1 to the lowest rate needed by lcdif instead of
dividing a larger clock down to the desired clock speed. This
has the advantage of being able to lower the video_pll1 rate
from 594MHz to 148.5MHz when operating at 1080p. It can go even
lower when operating at lower resolutions and refresh rates.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de> # Kontron BL i.MX8MM
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot/dts/freescale/imx8mm.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mm.dtsi | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 5b07716e941c..74f60913ae4a 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1133,7 +1133,7 @@ assigned-clock-parents = <&clk IMX8MM_VIDEO_PLL1_OUT>, <&clk IMX8MM_SYS_PLL2_1000M>, <&clk IMX8MM_SYS_PLL1_800M>; - assigned-clock-rates = <594000000>, <500000000>, <200000000>; + assigned-clock-rates = <24000000>, <500000000>, <200000000>; interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>; power-domains = <&disp_blk_ctrl IMX8MM_DISPBLK_PD_LCDIF>; status = "disabled"; |