[PATCHv14][ 4/4] ARM: dts: imx25: mbimxsd25: Add displays support.
From: festevam@gmail.com (Fabio Estevam)
Date: 2014-03-12 17:27:25
Subsystem:
framebuffer layer, freescale imx / mxc framebuffer driver, the rest · Maintainers:
Helge Deller, Sascha Hauer, Linus Torvalds
Hi Denis, On Wed, Jan 22, 2014 at 3:09 PM, Denis Carikli [off-list ref] wrote:
The CMO-QVGA(With backlight), DVI-VGA and DVI-SVGA displays were added.
I am trying the same on a mx25pdk and these are my changes: arch/arm/boot/dts/imx25-pdk.dts | 60 +++++++++++++++++++++++++++++++++++++++++ drivers/video/fbdev/imxfb.c | 2 +- 2 files changed, 61 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx25-pdk.dts b/arch/arm/boot/dts/imx25-pdk.dts
index cccd8fe..700ae1c 100644
--- a/arch/arm/boot/dts/imx25-pdk.dts
+++ b/arch/arm/boot/dts/imx25-pdk.dts@@ -21,6 +21,26 @@ reg = <0x80000000 0x4000000>; }; + display: display { + model = "CLAA057VC01CW"; + native-mode = <&timing0>; + bits-per-pixel = <16>; + fsl,pcr = <0xfa208b80>; + display-timings { + timing0: 640x480 { + hactive = <640>; + vactive = <480>; + hback-porch = <114>; + hfront-porch = <45>; + hsync-len = <1>; + vback-porch = <11>; + vfront-porch = <33>; + vsync-len = <1>; + clock-frequency = <25000000>; + }; + }; + }; + regulators { compatible = "simple-bus"; #address-cells = <1>;
@@ -98,6 +118,16 @@ status = "okay"; }; +&lcdc { + display = <&display>; + fsl,lpccr = <0x00a903ff>; + fsl,lscr1 = <0x00120300>; + fsl,dmacr = <0x00020010>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lcd>; + status = "okay"; +}; + &fec { phy-mode = "rmii"; pinctrl-names = "default";
@@ -170,6 +200,36 @@ >; }; + pinctrl_lcd: lcdgrp { + fsl,pins = < + MX25_PAD_LD0__LD0 0x80000000 + MX25_PAD_LD1__LD1 0x80000000 + MX25_PAD_LD2__LD2 0x80000000 + MX25_PAD_LD3__LD3 0x80000000 + MX25_PAD_LD4__LD4 0x80000000 + MX25_PAD_LD5__LD5 0x80000000 + MX25_PAD_LD6__LD6 0x80000000 + MX25_PAD_LD7__LD7 0x80000000 + MX25_PAD_LD8__LD8 0x80000000 + MX25_PAD_LD9__LD9 0x80000000 + MX25_PAD_LD10__LD10 0x80000000 + MX25_PAD_LD11__LD11 0x80000000 + MX25_PAD_LD12__LD12 0x80000000 + MX25_PAD_LD13__LD13 0x80000000 + MX25_PAD_LD14__LD14 0x80000000 + MX25_PAD_LD15__LD15 0x80000000 + MX25_PAD_GPIO_E__LD16 0x80000000 + MX25_PAD_GPIO_F__LD17 0x80000000 + MX25_PAD_HSYNC__HSYNC 0x80000000 + MX25_PAD_VSYNC__VSYNC 0x80000000 + MX25_PAD_LSCLK__LSCLK 0x80000000 + MX25_PAD_OE_ACD__OE_ACD 0x80000000 + MX25_PAD_CONTRAST__CONTRAST 0x80000000 + >; + }; + + + pinctrl_i2c1: i2c1grp { fsl,pins = < MX25_PAD_I2C1_CLK__I2C1_CLK 0x80000000
diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index 086e024..45cc30b 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c@@ -671,8 +671,8 @@ static int imxfb_init_fbinfo(struct platform_device *pdev) fbi->lscr1 = IMXFB_LSCR1_DEFAULT; of_property_read_u32(np, "fsl,lscr1", &fbi->lscr1); - of_property_read_u32(np, "fsl,dmacr", &fbi->dmacr); + of_property_read_u32(np, "fsl,lpccr", &fbi->pwmr); } return 0;
This last hunk if from an earlier patch from you. (I suggest you to resend it since the location of imxfb.c has changed in linux-next). Is there any other imxfb patch I am missing? I turned on the backlight supply via bootloader (kernel still does not support MC34704 PMIC yet), but the LCD screen is white and I cannot see the Linux logo. The /dev/fb0 does exist though. Any ideas? Regards, Fabio Estevam