Merge tag 'mtk-soc-for-v6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux into soc/drivers

MediaTek driver updates for v6.16

This brings some cleanups to the MediaTek DVFSRC driver, commonizing
the bandwidth constraints platform data, and also adds support for
the DVFSRC hardware found in the MediaTek Dimensity 1200 MT6893 SoC.

* tag 'mtk-soc-for-v6.16' of https://git.kernel.org/pub/scm/linux/kernel/git/mediatek/linux:
  soc: mediatek: mtk-dvfsrc: remove an unused variable
  soc: mediatek: mtk-dvfsrc: Add support for Dimensity 1200 MT6893
  soc: mediatek: mtk-dvfsrc: Rename and move bw constraints data
  dt-bindings: soc: mediatek: dvfsrc: Add support for MT6893

Link: https://lore.kernel.org/r/20250506091736.125733-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 44 insertions, 10 deletions

diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
index 1ad5b61b249f..4c96d4917967 100644
--- a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml
@@ -23,6 +23,7 @@ properties:
   compatible:
     oneOf:
       - enum:
+          - mediatek,mt6893-dvfsrc
           - mediatek,mt8183-dvfsrc
           - mediatek,mt8195-dvfsrc
       - items:
diff --git a/drivers/soc/mediatek/mtk-dvfsrc.c b/drivers/soc/mediatek/mtk-dvfsrc.c
index 83bf46fdcf2d..41add5636b03 100644
--- a/drivers/soc/mediatek/mtk-dvfsrc.c
+++ b/drivers/soc/mediatek/mtk-dvfsrc.c
@@ -446,6 +446,46 @@ static int mtk_dvfsrc_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct dvfsrc_bw_constraints dvfsrc_bw_constr_v1 = { 0, 0, 0 };
+static const struct dvfsrc_bw_constraints dvfsrc_bw_constr_v2 = {
+	.max_dram_nom_bw = 255,
+	.max_dram_peak_bw = 255,
+	.max_dram_hrt_bw = 1023,
+};
+
+static const struct dvfsrc_opp dvfsrc_opp_mt6893_lp4[] = {
+	{ 0, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 },
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1 },
+	{ 0, 2 }, { 1, 2 }, { 2, 2 }, { 3, 2 },
+	{ 0, 3 }, { 1, 3 }, { 2, 3 }, { 3, 3 },
+	{ 1, 4 }, { 2, 4 }, { 3, 4 }, { 2, 5 },
+	{ 3, 5 }, { 3, 6 }, { 4, 6 }, { 4, 7 },
+};
+
+static const struct dvfsrc_opp_desc dvfsrc_opp_mt6893_desc[] = {
+	[0] = {
+		.opps = dvfsrc_opp_mt6893_lp4,
+		.num_opp = ARRAY_SIZE(dvfsrc_opp_mt6893_lp4),
+	}
+};
+
+static const struct dvfsrc_soc_data mt6893_data = {
+	.opps_desc = dvfsrc_opp_mt6893_desc,
+	.regs = dvfsrc_mt8195_regs,
+	.get_target_level = dvfsrc_get_target_level_v2,
+	.get_current_level = dvfsrc_get_current_level_v2,
+	.get_vcore_level = dvfsrc_get_vcore_level_v2,
+	.get_vscp_level = dvfsrc_get_vscp_level_v2,
+	.set_dram_bw = dvfsrc_set_dram_bw_v1,
+	.set_dram_peak_bw = dvfsrc_set_dram_peak_bw_v1,
+	.set_dram_hrt_bw = dvfsrc_set_dram_hrt_bw_v1,
+	.set_vcore_level = dvfsrc_set_vcore_level_v2,
+	.set_vscp_level = dvfsrc_set_vscp_level_v2,
+	.wait_for_opp_level = dvfsrc_wait_for_opp_level_v2,
+	.wait_for_vcore_level = dvfsrc_wait_for_vcore_level_v1,
+	.bw_constraints = &dvfsrc_bw_constr_v2,
+};
+
 static const struct dvfsrc_opp dvfsrc_opp_mt8183_lp4[] = {
 	{ 0, 0 }, { 0, 1 }, { 0, 2 }, { 1, 2 },
 };
@@ -469,8 +509,6 @@ static const struct dvfsrc_opp_desc dvfsrc_opp_mt8183_desc[] = {
 	}
 };
 
-static const struct dvfsrc_bw_constraints dvfsrc_bw_constr_mt8183 = { 0, 0, 0 };
-
 static const struct dvfsrc_soc_data mt8183_data = {
 	.opps_desc = dvfsrc_opp_mt8183_desc,
 	.regs = dvfsrc_mt8183_regs,
@@ -482,7 +520,7 @@ static const struct dvfsrc_soc_data mt8183_data = {
 	.set_vcore_level = dvfsrc_set_vcore_level_v1,
 	.wait_for_opp_level = dvfsrc_wait_for_opp_level_v1,
 	.wait_for_vcore_level = dvfsrc_wait_for_vcore_level_v1,
-	.bw_constraints = &dvfsrc_bw_constr_mt8183,
+	.bw_constraints = &dvfsrc_bw_constr_v1,
 };
 
 static const struct dvfsrc_opp dvfsrc_opp_mt8195_lp4[] = {
@@ -501,12 +539,6 @@ static const struct dvfsrc_opp_desc dvfsrc_opp_mt8195_desc[] = {
 	}
 };
 
-static const struct dvfsrc_bw_constraints dvfsrc_bw_constr_mt8195 = {
-	.max_dram_nom_bw = 255,
-	.max_dram_peak_bw = 255,
-	.max_dram_hrt_bw = 1023,
-};
-
 static const struct dvfsrc_soc_data mt8195_data = {
 	.opps_desc = dvfsrc_opp_mt8195_desc,
 	.regs = dvfsrc_mt8195_regs,
@@ -521,10 +553,11 @@ static const struct dvfsrc_soc_data mt8195_data = {
 	.set_vscp_level = dvfsrc_set_vscp_level_v2,
 	.wait_for_opp_level = dvfsrc_wait_for_opp_level_v2,
 	.wait_for_vcore_level = dvfsrc_wait_for_vcore_level_v1,
-	.bw_constraints = &dvfsrc_bw_constr_mt8195,
+	.bw_constraints = &dvfsrc_bw_constr_v2,
 };
 
 static const struct of_device_id mtk_dvfsrc_of_match[] = {
+	{ .compatible = "mediatek,mt6893-dvfsrc", .data = &mt6893_data },
 	{ .compatible = "mediatek,mt8183-dvfsrc", .data = &mt8183_data },
 	{ .compatible = "mediatek,mt8195-dvfsrc", .data = &mt8195_data },
 	{ /* sentinel */ }