Messages in this thread | | | Date | Mon, 10 Jun 2013 09:44:14 +0530 | From | Tushar Behera <> | Subject | Re: [PATCH 2/3] ARM: dts: Add FIMD node to Origen4210 board |
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On 06/08/2013 04:19 PM, Tomasz Figa wrote: > On Friday 07 of June 2013 16:37:14 Tushar Behera wrote: >> From: Sachin Kamat <sachin.kamat@linaro.org> >> >> Added FIMD and display timing node to Origen4210 board. >> >> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> >> Signed-off-by: Tushar Behera <tushar.behera@linaro.org> >> --- >> arch/arm/boot/dts/exynos4210-origen.dts | 21 +++++++++++++++++++++ >> 1 file changed, 21 insertions(+) >> >> diff --git a/arch/arm/boot/dts/exynos4210-origen.dts >> b/arch/arm/boot/dts/exynos4210-origen.dts index bcf8079..4c6c3cd 100644 >> --- a/arch/arm/boot/dts/exynos4210-origen.dts >> +++ b/arch/arm/boot/dts/exynos4210-origen.dts >> @@ -290,4 +290,25 @@ >> clock-frequency = <24000000>; >> }; >> }; >> + >> + fimd@11c00000 { >> + pinctrl-0 = <&lcd_en &lcd_clk &lcd_data24 &pwm0_out>; > > Ahh, this would explain the two pwm pin groups from previous patch. > > This seems somehow incorrect, though. AFAIK PWM outputs are not managed by > FIMD in any way. >
I couldn't find any better place to put the pwm0_out pin configurations. Without configuring pwm0_out pins, display doesn't come up on the LCD. Any suggestions?
>> + pinctrl-names = "default"; >> + status = "okay"; >> + }; >> + >> + display-timings { >> + native-mode = <&timing0>; >> + timing0: timing { >> + clock-frequency = <50000>; > > Hmm, 50 KHz for pixel clock? Isn't it a bit too low? Or am I missing > something? >
Actually clock-frequency value is not used by DRM-FIMD, but instead required by the framework.
Still it would be better to provide the actual pixel clock value here. So I would update this with 40MHz which is actual pixel clock used on my board.
> Best regards, > Tomasz > >> + hactive = <1024>; >> + vactive = <600>; >> + hfront-porch = <64>; >> + hback-porch = <16>; >> + hsync-len = <48>; >> + vback-porch = <64>; >> + vfront-porch = <16>; >> + vsync-len = <3>; >> + }; >> + }; >> };
Thanks for your review.
-- Tushar Behera
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