[PATCH v4 10/10] drm/rockchip: analogix_dp: Add support for RK3576

[Damon Ding]

RK3576 integrates Analogix eDP 1.3 TX and Samsung combo PHY
hardware blocks that fully match the proven RK3588 design.

Add dedicated chip data table and device tree matching entry
to bring up basic eDP functionality for the RK3576 platform.

Support is limited to RGB output up to 4K at 60Hz for now; audio,
PSR and other advanced eDP 1.3 features remain unvalidated.

Signed-off-by: Damon Ding <damon.ding at rock-chips.com>
Reviewed-by: Nicolas Frattaroli <nicolas.frattaroli at collabora.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli at bootlin.com>

---

Changes in v2:
- Split out a separate patch to enable the "hclk" clock.
- Add Reviewed-by tag.

Changes in v3:
- Add Reviewed-by tag.

Changes in v4:
- Modify the commit msg.
---
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index a864bcf8200e..75706a2fdba8 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -522,6 +522,14 @@ static const struct rockchip_dp_chip_data rk3288_dp[] = {
 	{ /* sentinel */ }
 };
 
+static const struct rockchip_dp_chip_data rk3576_edp[] = {
+	{
+		.chip_type = RK3576_EDP,
+		.reg = 0x27dc0000,
+	},
+	{ /* sentinel */ }
+};
+
 static const struct rockchip_dp_chip_data rk3588_edp[] = {
 	{
 		.edp_mode = GRF_REG_FIELD(0x0000, 0, 0),
@@ -539,6 +547,7 @@ static const struct rockchip_dp_chip_data rk3588_edp[] = {
 static const struct of_device_id rockchip_dp_dt_ids[] = {
 	{.compatible = "rockchip,rk3288-dp", .data = &rk3288_dp },
 	{.compatible = "rockchip,rk3399-edp", .data = &rk3399_edp },
+	{.compatible = "rockchip,rk3576-edp", .data = &rk3576_edp },
 	{.compatible = "rockchip,rk3588-edp", .data = &rk3588_edp },
 	{}
 };
-- 
2.34.1