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ARM: dts: am335x-evmsk: enable display and lcd panel support

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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@ti.com>
Acked-by: Wolfram Sang <wsa@sang-engineering.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Darren Etheridge 2014-07-01 16:00:20 -05:00 committed by Tony Lindgren
parent 4a45787dec
commit b675d1ecce
1 changed files with 105 additions and 0 deletions
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105
arch/arm/boot/dts/am335x-evmsk.dts
View File

@ -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";
};