[PATCH v3] ARM: dts: am335x-evmsk: enable display and lcd panel support
Tony Lindgren
tony at atomide.com
Wed Jul 2 00:45:08 PDT 2014
* Felipe Balbi <balbi at ti.com> [140701 14:10]:
> Hi,
>
> On Tue, Jul 01, 2014 at 04:00:20PM -0500, Darren Etheridge wrote:
> > Add the necessary nodes to enable the LCD controller and the
> > LCD panel that is attached to the Texas Instruments AM335x
> > EVMSK platform. Also setup the necessary pin mux within the
> > DT file to drive the LCD connector and add the correct
> > pinmux settings for the lcd pins to be configured to when
> > the SoC goes into sleep state for the minimum power
> > consumption.
> >
> > For the sleep mode LCD pin settings, MUX_MODE7 is chosen as
> > this corresponds to switching the pins into input GPIO's with
> > an internal pulldown. Which has been determined to offer the
> > lowest power solution vs leaving the pins configured in LCD
> > mode.
> >
> > Signed-off-by: Darren Etheridge <detheridge at ti.com>
> > Acked-by: Wolfram Sang <wsa at sang-engineering.com>
>
> Tested-by: Felipe Balbi <balbi at ti.com>
>
> serial console capture: http://slexy.org/view/s200thiMb3
>
> note that v2 has been pending since May 9th:
> http://marc.info/?l=linux-omap&m=139966159102339&w=2
>
> > ---
> > Tony, Benoit,
> >
> > I didn't see this patch get applied anywhere, so I updated it and I am
> > resending it. Please let me know if you need any more info before you will
> > apply it.
Tomi, do you want to ack this one or want to queue the panel .dts
changes into a separate branch?
Regards,
Tony
> > Thanks, Darren
> >
> > v3:
> > Updated subject to match classification style of subsystem
> > Rebased against 3.16-rc3
> >
> > v2:
> > Fixed up the incorrect label ordering in the pinmux comments for LCD pins
> > 16 through 23 as reported by Wolfram Sang <wsa at sang-engineering.com>
> >
> > arch/arm/boot/dts/am335x-evmsk.dts | 105 +++++++++++++++++++++++++++++++++++++
> > 1 file changed, 105 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
> > index ab9a34c..59766e2 100644
> > --- a/arch/arm/boot/dts/am335x-evmsk.dts
> > +++ b/arch/arm/boot/dts/am335x-evmsk.dts
> > @@ -149,12 +149,113 @@
> > "Headphone Jack", "HPLOUT",
> > "Headphone Jack", "HPROUT";
> > };
> > +
> > + panel {
> > + compatible = "ti,tilcdc,panel";
> > + pinctrl-names = "default", "sleep";
> > + pinctrl-0 = <&lcd_pins_default>;
> > + pinctrl-1 = <&lcd_pins_sleep>;
> > + status = "okay";
> > + panel-info {
> > + ac-bias = <255>;
> > + ac-bias-intrpt = <0>;
> > + dma-burst-sz = <16>;
> > + bpp = <32>;
> > + fdd = <0x80>;
> > + sync-edge = <0>;
> > + sync-ctrl = <1>;
> > + raster-order = <0>;
> > + fifo-th = <0>;
> > + };
> > + display-timings {
> > + 480x272 {
> > + hactive = <480>;
> > + vactive = <272>;
> > + hback-porch = <43>;
> > + hfront-porch = <8>;
> > + hsync-len = <4>;
> > + vback-porch = <12>;
> > + vfront-porch = <4>;
> > + vsync-len = <10>;
> > + clock-frequency = <9000000>;
> > + hsync-active = <0>;
> > + vsync-active = <0>;
> > + };
> > + };
> > + };
> > };
> >
> > &am33xx_pinmux {
> > pinctrl-names = "default";
> > pinctrl-0 = <&gpio_keys_s0 &clkout2_pin>;
> >
> > + lcd_pins_default: lcd_pins_default {
> > + pinctrl-single,pins = <
> > + 0x20 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad8.lcd_data23 */
> > + 0x24 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad9.lcd_data22 */
> > + 0x28 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad10.lcd_data21 */
> > + 0x2c (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad11.lcd_data20 */
> > + 0x30 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad12.lcd_data19 */
> > + 0x34 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad13.lcd_data18 */
> > + 0x38 (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad14.lcd_data17 */
> > + 0x3c (PIN_OUTPUT | MUX_MODE1) /* gpmc_ad15.lcd_data16 */
> > + 0xa0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data0.lcd_data0 */
> > + 0xa4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data1.lcd_data1 */
> > + 0xa8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data2.lcd_data2 */
> > + 0xac (PIN_OUTPUT | MUX_MODE0) /* lcd_data3.lcd_data3 */
> > + 0xb0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data4.lcd_data4 */
> > + 0xb4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data5.lcd_data5 */
> > + 0xb8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data6.lcd_data6 */
> > + 0xbc (PIN_OUTPUT | MUX_MODE0) /* lcd_data7.lcd_data7 */
> > + 0xc0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data8.lcd_data8 */
> > + 0xc4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data9.lcd_data9 */
> > + 0xc8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data10.lcd_data10 */
> > + 0xcc (PIN_OUTPUT | MUX_MODE0) /* lcd_data11.lcd_data11 */
> > + 0xd0 (PIN_OUTPUT | MUX_MODE0) /* lcd_data12.lcd_data12 */
> > + 0xd4 (PIN_OUTPUT | MUX_MODE0) /* lcd_data13.lcd_data13 */
> > + 0xd8 (PIN_OUTPUT | MUX_MODE0) /* lcd_data14.lcd_data14 */
> > + 0xdc (PIN_OUTPUT | MUX_MODE0) /* lcd_data15.lcd_data15 */
> > + 0xe0 (PIN_OUTPUT | MUX_MODE0) /* lcd_vsync.lcd_vsync */
> > + 0xe4 (PIN_OUTPUT | MUX_MODE0) /* lcd_hsync.lcd_hsync */
> > + 0xe8 (PIN_OUTPUT | MUX_MODE0) /* lcd_pclk.lcd_pclk */
> > + 0xec (PIN_OUTPUT | MUX_MODE0) /* lcd_ac_bias_en.lcd_ac_bias_en */
> > + >;
> > + };
> > +
> > + lcd_pins_sleep: lcd_pins_sleep {
> > + pinctrl-single,pins = <
> > + 0x20 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad8.lcd_data23 */
> > + 0x24 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad9.lcd_data22 */
> > + 0x28 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad10.lcd_data21 */
> > + 0x2c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad11.lcd_data20 */
> > + 0x30 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad12.lcd_data19 */
> > + 0x34 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad13.lcd_data18 */
> > + 0x38 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad14.lcd_data17 */
> > + 0x3c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad15.lcd_data16 */
> > + 0xa0 (PULL_DISABLE | MUX_MODE7) /* lcd_data0.lcd_data0 */
> > + 0xa4 (PULL_DISABLE | MUX_MODE7) /* lcd_data1.lcd_data1 */
> > + 0xa8 (PULL_DISABLE | MUX_MODE7) /* lcd_data2.lcd_data2 */
> > + 0xac (PULL_DISABLE | MUX_MODE7) /* lcd_data3.lcd_data3 */
> > + 0xb0 (PULL_DISABLE | MUX_MODE7) /* lcd_data4.lcd_data4 */
> > + 0xb4 (PULL_DISABLE | MUX_MODE7) /* lcd_data5.lcd_data5 */
> > + 0xb8 (PULL_DISABLE | MUX_MODE7) /* lcd_data6.lcd_data6 */
> > + 0xbc (PULL_DISABLE | MUX_MODE7) /* lcd_data7.lcd_data7 */
> > + 0xc0 (PULL_DISABLE | MUX_MODE7) /* lcd_data8.lcd_data8 */
> > + 0xc4 (PULL_DISABLE | MUX_MODE7) /* lcd_data9.lcd_data9 */
> > + 0xc8 (PULL_DISABLE | MUX_MODE7) /* lcd_data10.lcd_data10 */
> > + 0xcc (PULL_DISABLE | MUX_MODE7) /* lcd_data11.lcd_data11 */
> > + 0xd0 (PULL_DISABLE | MUX_MODE7) /* lcd_data12.lcd_data12 */
> > + 0xd4 (PULL_DISABLE | MUX_MODE7) /* lcd_data13.lcd_data13 */
> > + 0xd8 (PULL_DISABLE | MUX_MODE7) /* lcd_data14.lcd_data14 */
> > + 0xdc (PULL_DISABLE | MUX_MODE7) /* lcd_data15.lcd_data15 */
> > + 0xe0 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_vsync.lcd_vsync */
> > + 0xe4 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_hsync.lcd_hsync */
> > + 0xe8 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_pclk.lcd_pclk */
> > + 0xec (PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_ac_bias_en.lcd_ac_bias_en */
> > + >;
> > + };
> > +
> > +
> > user_leds_s0: user_leds_s0 {
> > pinctrl-single,pins = <
> > 0x10 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad4.gpio1_4 */
> > @@ -573,3 +674,7 @@
> > ti,wire-config = <0x00 0x11 0x22 0x33>;
> > };
> > };
> > +
> > +&lcdc {
> > + status = "okay";
> > +};
> > --
> > 1.9.1
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> > the body of a message to majordomo at vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>
> --
> balbi
More information about the linux-arm-kernel
mailing list