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video: rockchip: Add HDMI support for RK3568

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HDMI on RK3568 is mostly simplified, all this does is enabling
DDC for display timings and HPD.

Signed-off-by: Dang Huynh <danct12@riseup.net>
This commit is contained in:
Dang Huynh
2025-01-16 16:15:58 +07:00
committed by Ondrej Jirman
parent bc5dcbbd1a
commit 8dc4a136b1
2 changed files with 64 additions and 0 deletions
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1
drivers/video/rockchip/Makefile
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@@ -14,6 +14,7 @@ obj-$(CONFIG_DISPLAY_ROCKCHIP_LVDS) += rk_lvds.o
obj-hdmi-$(CONFIG_ROCKCHIP_RK3288) += rk3288_hdmi.o
obj-hdmi-$(CONFIG_ROCKCHIP_RK3328) += rk3328_hdmi.o
obj-hdmi-$(CONFIG_ROCKCHIP_RK3399) += rk3399_hdmi.o
obj-hdmi-$(CONFIG_ROCKCHIP_RK3568) += rk3568_hdmi.o
obj-$(CONFIG_DISPLAY_ROCKCHIP_HDMI) += rk_hdmi.o $(obj-hdmi-y)
obj-mipi-$(CONFIG_ROCKCHIP_RK3288) += rk3288_mipi.o
obj-mipi-$(CONFIG_ROCKCHIP_RK3399) += rk3399_mipi.o

63
drivers/video/rockchip/rk3568_hdmi.c Normal file
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@@ -0,0 +1,63 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2024 Dang Huynh <danct12@riseup.net>
*/
#include <display.h>
#include <dm.h>
#include <dw_hdmi.h>
#include <edid.h>
#include <asm/arch-rockchip/hardware.h>
#include <asm/arch-rockchip/grf_rk3568.h>
#include "rk_hdmi.h"
#define RK3568_IO_DDC_IN_MSK ((3 << 14) | (3 << (14 + 16)))
static int rk3568_hdmi_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *edid)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
return dw_hdmi_enable(&priv->hdmi, edid);
}
static int rk3568_hdmi_of_to_plat(struct udevice *dev)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
struct dw_hdmi *hdmi = &priv->hdmi;
hdmi->i2c_clk_high = 0x71;
hdmi->i2c_clk_low = 0x76;
return rk_hdmi_of_to_plat(dev);
}
static int rk3568_hdmi_probe(struct udevice *dev)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
struct rk3568_grf *grf = priv->grf;
writel(RK3568_IO_DDC_IN_MSK, &grf->vo_con1);
return rk_hdmi_probe(dev);
}
static const struct dm_display_ops rk3568_hdmi_ops = {
.read_edid = rk_hdmi_read_edid,
.enable = rk3568_hdmi_enable,
};
static const struct udevice_id rk3568_hdmi_ids[] = {
{ .compatible = "rockchip,rk3568-dw-hdmi" },
{ }
};
U_BOOT_DRIVER(rk3568_hdmi_rockchip) = {
.name = "rk3568_hdmi_rockchip",
.id = UCLASS_DISPLAY,
.of_match = rk3568_hdmi_ids,
.ops = &rk3568_hdmi_ops,
.of_to_plat = rk3568_hdmi_of_to_plat,
.probe = rk3568_hdmi_probe,
.priv_auto = sizeof(struct rk_hdmi_priv),
};