HD702E lcd is FriendlyELEC developed eDP LCD panel with 800x1280 resolution. It has built in Goodix, GT9271 captive touchscreen with backlight adjustable via PWM.

Add support for it.

Cc: Thierry Reding thierry.reding@gmail.com Cc: Sam Ravnborg sam@ravnborg.org Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org Reviewed-by: Rob Herring robh@kernel.org Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- Changes for v2: - separate it from binding patch - sort the match id and compatible

drivers/gpu/drm/panel/panel-simple.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index 9e8218f6a3f2..93274e270663 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -1184,6 +1184,29 @@ static const struct panel_desc foxlink_fl500wvr00_a0t = { .bus_format = MEDIA_BUS_FMT_RGB888_1X24, };

+static const struct drm_display_mode friendlyarm_hd702e_mode = { + .clock = 67185, + .hdisplay = 800, + .hsync_start = 800 + 20, + .hsync_end = 800 + 20 + 24, + .htotal = 800 + 20 + 24 + 20, + .vdisplay = 1280, + .vsync_start = 1280 + 4, + .vsync_end = 1280 + 4 + 8, + .vtotal = 1280 + 4 + 8 + 4, + .vrefresh = 60, + .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC, +}; + +static const struct panel_desc friendlyarm_hd702e = { + .modes = &friendlyarm_hd702e_mode, + .num_modes = 1, + .size = { + .width = 94, + .height = 151, + }, +}; + static const struct drm_display_mode giantplus_gpg482739qs5_mode = { .clock = 9000, .hdisplay = 480, @@ -2637,6 +2660,9 @@ static const struct of_device_id platform_of_match[] = { }, { .compatible = "foxlink,fl500wvr00-a0t", .data = &foxlink_fl500wvr00_a0t, + }, { + .compatible = "friendlyarm,hd702e", + .data = &friendlyarm_hd702e, }, { .compatible = "giantplus,gpg482739qs5", .data = &giantplus_gpg482739qs5

FriendlyELEC HD702E is one of optional LCD panel for NanoPC T4 eDP interface.

It features 800x1280 resolutions, with built in GT9271 captive touchscreen and adjustable backlight via PWM.

eDP panel connections are: - VCC3V3_SYS: 3.3V panel power supply - GPIO4_C2: PWM0_BL pin - GPIO4_D5_LCD_BL_EN: Backlight enable pin - VCC12V0_SYS: 12V backlight power supply - Touchscreen connected via I2C4 - GPIO1_C4_TP_INT: touchscreen interrupt pin - GPIO1_B5_TP_RST: touchscreen reset pin

Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- Changes for v2: - use force-hpd and delete-property for edp - use generic backlight brightness - add simple-panel fallback compatible

.../boot/dts/rockchip/rk3399-nanopc-t4.dts | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts index 931c3dbf1b7d..4cacd09658dc 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts @@ -46,6 +46,14 @@ }; };

+ backlight: backlight { + compatible = "pwm-backlight"; + enable-gpios = <&gpio4 RK_PD5 GPIO_ACTIVE_HIGH>; /* GPIO4_D5_LCD_BL_EN */ + pwms = <&pwm0 0 25000 0>; + power-supply = <&vcc12v0_sys>; + status = "okay"; + }; + ir-receiver { compatible = "gpio-ir-receiver"; gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>; @@ -64,6 +72,18 @@ fan-supply = <&vcc12v0_sys>; pwms = <&pwm1 0 50000 0>; }; + + panel { + compatible ="friendlyarm,hd702e", "simple-panel"; + backlight = <&backlight>; + power-supply = <&vcc3v3_sys>; + + port { + panel_in_edp: endpoint { + remote-endpoint = <&edp_out_panel>; + }; + }; + }; };

&cpu_thermal { @@ -94,6 +114,25 @@ }; };

+&edp { + status = "okay"; + force-hpd; + /delete-property/ pinctrl-0; + + ports { + edp_out: port@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + + edp_out_panel: endpoint@0 { + reg = <0>; + remote-endpoint = <&panel_in_edp>; + }; + }; + }; +}; + &gpu_thermal { trips { gpu_warm: gpu_warm { @@ -130,6 +169,17 @@ }; };

+&i2c4 { + touchscreen@5d { + compatible = "goodix,gt911"; + reg = <0x5d>; + interrupt-parent = <&gpio1>; + interrupts = <RK_PC4 IRQ_TYPE_EDGE_FALLING>; + irq-gpio = <&gpio1 RK_PC4 GPIO_ACTIVE_HIGH>; /* GPIO1_C4_TP_INT */ + reset-gpio = <&gpio1 RK_PB5 GPIO_ACTIVE_LOW>; /* GPIO1_B5_TP_RST */ + }; +}; + &sdhci { mmc-hs400-1_8v; mmc-hs400-enhanced-strobe;