sunxi: Display: Add support for eDP panels connected via an anx9804 bridge
Add support for 4 1.62G lane eDP panels connected via an anx9804 bridge,
such as found on the Colombus devkit.
While at it also fix the wrong indentation of the SSD2828 Kconfig help text
in board/sunxi/Kconfig.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 13f4537..fd6668f 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -526,7 +526,16 @@
select VIDEO_LCD_SSD2828
select VIDEO_LCD_IF_PARALLEL
---help---
- 7.85" 768x1024 LCD panels, such as LG LP079X01 or AUO B079XAN01.0
+ 7.85" 768x1024 LCD panels, such as LG LP079X01 or AUO B079XAN01.0
+
+config VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804
+ bool "eDP 4-lane, 1.62G LCD panel via ANX9804 bridge chip"
+ select VIDEO_LCD_ANX9804
+ select VIDEO_LCD_IF_PARALLEL
+ select VIDEO_LCD_PANEL_I2C
+ ---help---
+ Select this for eDP LCD panels with 4 lanes running at 1.62G,
+ connected via an ANX9804 bridge chip.
config VIDEO_LCD_PANEL_HITACHI_TX18D42VM
bool "Hitachi tx18d42vm LCD panel"
diff --git a/configs/Colombus_defconfig b/configs/Colombus_defconfig
index 7fa9ef1..35f644a 100644
--- a/configs/Colombus_defconfig
+++ b/configs/Colombus_defconfig
@@ -4,6 +4,16 @@
CONFIG_DRAM_CLK=240
CONFIG_DRAM_ZQ=251
CONFIG_USB1_VBUS_PIN=""
+CONFIG_I2C0_ENABLE=y
+CONFIG_AXP_GPIO=y
+CONFIG_VIDEO_LCD_MODE="x:2048,y:1536,depth:24,pclk_khz:208000,le:5,ri:150,up:9,lo:24,hs:5,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_DCLK_PHASE=0
+CONFIG_VIDEO_LCD_POWER="PH27"
+CONFIG_VIDEO_LCD_BL_EN="PM1"
+CONFIG_VIDEO_LCD_BL_PWM="PH13"
+CONFIG_VIDEO_LCD_PANEL_I2C_SDA="PA23"
+CONFIG_VIDEO_LCD_PANEL_I2C_SCL="PA24"
+CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804=y
CONFIG_DEFAULT_DEVICE_TREE="sun6i-a31-colombus"
# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
CONFIG_SPL=y
@@ -13,4 +23,5 @@
# CONFIG_CMD_FPGA is not set
CONFIG_ETH_DESIGNWARE=y
CONFIG_AXP221_ALDO1_VOLT=3300
+CONFIG_AXP221_ELDO3_VOLT=1800
CONFIG_USB_EHCI_HCD=y
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 06ed5c7..fc1aea3 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -15,6 +15,7 @@
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <asm/io.h>
+#include <axp221.h>
#include <errno.h>
#include <fdtdec.h>
#include <fdt_support.h>
@@ -22,6 +23,7 @@
#include <malloc.h>
#include <video_fb.h>
#include "videomodes.h"
+#include "anx9804.h"
#include "hitachi_tx18d42vm_lcd.h"
#include "ssd2828.h"
@@ -765,13 +767,17 @@
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
int bp, clk_delay, clk_div, clk_double, pin, total, val;
- for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++)
+ for (pin = SUNXI_GPD(0); pin <= SUNXI_GPD(27); pin++) {
#ifdef CONFIG_VIDEO_LCD_IF_PARALLEL
sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LCD0);
#endif
#ifdef CONFIG_VIDEO_LCD_IF_LVDS
sunxi_gpio_set_cfgpin(pin, SUNXI_GPD_LVDS0);
#endif
+#ifdef CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804
+ sunxi_gpio_set_drv(pin, 3);
+#endif
+ }
sunxi_lcdc_pll_set(0, mode->pixclock_khz, &clk_div, &clk_double);
@@ -1208,6 +1214,17 @@
break;
case sunxi_monitor_lcd:
sunxi_lcdc_panel_enable();
+ if (IS_ENABLED(CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804)) {
+ /*
+ * The anx9804 needs 1.8V from eldo3, we do this here
+ * and not via CONFIG_AXP221_ELDO3 from board_init()
+ * to avoid turning this on when using hdmi output.
+ */
+ axp221_set_eldo(3, 1800);
+ anx9804_init(CONFIG_VIDEO_LCD_I2C_BUS, 4,
+ ANX9804_DATA_RATE_1620M,
+ sunxi_display.depth);
+ }
if (IS_ENABLED(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM)) {
mdelay(50); /* Wait for lcd controller power on */
hitachi_tx18d42vm_init();
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 7608f12..1abf73c 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -288,7 +288,11 @@
* The amount of RAM to keep free at the top of RAM when relocating u-boot,
* to use as framebuffer. This must be a multiple of 4096.
*/
+#ifdef CONFIG_VIDEO_LCD_PANEL_EDP_4_LANE_1620M_VIA_ANX9804
+#define CONFIG_SUNXI_MAX_FB_SIZE (12 << 20)
+#else
#define CONFIG_SUNXI_MAX_FB_SIZE (9 << 20)
+#endif
/* Do we want to initialize a simple FB? */
#define CONFIG_VIDEO_DT_SIMPLEFB