There are two main modifications: one is expanding struct
rockchip_dp_chip_data to an array, and the other is adding
&rockchip_dp_chip_data.reg to separate different edp devices.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
---
 .../gpu/drm/rockchip/analogix_dp-rockchip.c   | 41 +++++++++++++++----
 1 file changed, 34 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index eef1ff0f3a13..0957d3c5d31d 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -56,6 +56,7 @@ struct rockchip_grf_reg_field {
 struct rockchip_dp_chip_data {
 	const struct rockchip_grf_reg_field lcdc_sel;
 	u32	chip_type;
+	u32	reg;
 };
 
 struct rockchip_dp_device {
@@ -397,6 +398,8 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 	const struct rockchip_dp_chip_data *dp_data;
 	struct drm_panel *panel = NULL;
 	struct rockchip_dp_device *dp;
+	struct resource *res;
+	int i;
 	int ret;
 
 	dp_data = of_device_get_match_data(dev);
@@ -411,9 +414,25 @@ static int rockchip_dp_probe(struct platform_device *pdev)
 	if (!dp)
 		return -ENOMEM;
 
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	i = 0;
+	while (dp_data[i].reg) {
+		if (dp_data[i].reg == res->start) {
+			dp->data = &dp_data[i];
+			break;
+		}
+
+		i++;
+	}
+
+	if (!dp->data) {
+		dev_err(dev, "no chip-data for %s node\n", dev->of_node->name);
+		return -ENODEV;
+	}
+
 	dp->dev = dev;
 	dp->adp = ERR_PTR(-ENODEV);
-	dp->data = dp_data;
 	dp->plat_data.panel = panel;
 	dp->plat_data.dev_type = dp->data->chip_type;
 	dp->plat_data.power_on = rockchip_dp_poweron;
@@ -465,14 +484,22 @@ static int rockchip_dp_resume(struct device *dev)
 static DEFINE_RUNTIME_DEV_PM_OPS(rockchip_dp_pm_ops, rockchip_dp_suspend,
 		rockchip_dp_resume, NULL);
 
-static const struct rockchip_dp_chip_data rk3399_edp = {
-	.lcdc_sel = GRF_REG_FIELD(0x6250, 5, 5),
-	.chip_type = RK3399_EDP,
+static const struct rockchip_dp_chip_data rk3399_edp[] = {
+	{
+		.lcdc_sel = GRF_REG_FIELD(0x6250, 5, 5),
+		.chip_type = RK3399_EDP,
+		.reg = 0xff970000,
+	},
+	{ /* sentinel */ }
 };
 
-static const struct rockchip_dp_chip_data rk3288_dp = {
-	.lcdc_sel = GRF_REG_FIELD(0x025c, 5, 5),
-	.chip_type = RK3288_DP,
+static const struct rockchip_dp_chip_data rk3288_dp[] = {
+	{
+		.lcdc_sel = GRF_REG_FIELD(0x025c, 5, 5),
+		.chip_type = RK3288_DP,
+		.reg = 0xff970000,
+	},
+	{ /* sentinel */ }
 };
 
 static const struct of_device_id rockchip_dp_dt_ids[] = {
-- 
2.34.1

Hi Damon,

kernel test robot noticed the following build warnings:

[auto build test WARNING on rockchip/for-next]
[also build test WARNING on robh/for-next drm/drm-next drm-exynos/exynos-drm-next linus/master v6.13-rc6 next-20250109]
[cannot apply to drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Damon-Ding/phy-phy-rockchip-samsung-hdptx-Swap-the-definitions-of-LCPLL_REF-and-ROPLL_REF/20250109-113114
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
patch link:    https://lore.kernel.org/r/20250109032725.1102465-8-damon.ding%40rock-chips.com
patch subject: [PATCH v5 07/20] drm/rockchip: analogix_dp: Expand device data to support multiple edp display
config: hexagon-randconfig-002-20250110 (https://download.01.org/0day-ci/archive/20250110/202501101445.xlso2z73-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project f5cd181ffbb7cb61d582fe130d46580d5969d47a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250110/202501101445.xlso2z73-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501101445.xlso2z73-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:60: warning: Function parameter or struct member 'reg' not described in 'rockchip_dp_chip_data'


vim +60 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

8f0ac5c4835291 Yakir Yang 2016-07-24  50  
d9c900b0270a18 Yakir Yang 2016-06-29  51  /**
d9c900b0270a18 Yakir Yang 2016-06-29  52   * struct rockchip_dp_chip_data - splite the grf setting of kind of chips
bbb8c3102ebf3b Damon Ding 2025-01-09  53   * @lcdc_sel: grf register field of lcdc_sel
d9c900b0270a18 Yakir Yang 2016-06-29  54   * @chip_type: specific chip type
d9c900b0270a18 Yakir Yang 2016-06-29  55   */
d9c900b0270a18 Yakir Yang 2016-06-29  56  struct rockchip_dp_chip_data {
bbb8c3102ebf3b Damon Ding 2025-01-09  57  	const struct rockchip_grf_reg_field lcdc_sel;
d9c900b0270a18 Yakir Yang 2016-06-29  58  	u32	chip_type;
26f1f37804f0d4 Damon Ding 2025-01-09  59  	u32	reg;
d9c900b0270a18 Yakir Yang 2016-06-29 @60  };
9e32e16e9e989f Yakir Yang 2016-03-29  61  

-- 
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https://github.com/intel/lkp-tests/wiki