diff mbox series

[3/3] soc: mediatek: scpsys: Add support for MT6735

Message ID 20230225101629.264206-4-y.oudjana@protonmail.com
State New
Headers
Series MediaTek MT6735 SCPSYS support |

Commit Message

Yassine Oudjana Feb. 25, 2023, 10:16 a.m. UTC 
  From: Yassine Oudjana <y.oudjana@protonmail.com>

Add support for SCPSYS power domains of MT6735. All non-CPU power domains
are added except for MD2 (C2K modem), which is left out due to issues
with powering it on.

Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
---
 drivers/soc/mediatek/mtk-scpsys.c | 84 +++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)

Comments

AngeloGioacchino Del Regno Feb. 27, 2023, 9:33 a.m. UTC | #1 
Il 25/02/23 11:16, Yassine Oudjana ha scritto:
> From: Yassine Oudjana <y.oudjana@protonmail.com>
> 
> Add support for SCPSYS power domains of MT6735. All non-CPU power domains
> are added except for MD2 (C2K modem), which is left out due to issues
> with powering it on.
> 

This is a legacy driver and I'm convinced that we should do something to
actually *drop it forever*.

Please add support for power domains in mtk-pm-domains.c instead: if you need
a nice example about differences between the two, look at MT8173's implementation,
as that is present in both scpsys and mtk-pm-domains.

Summarizing, your MT6735 support will be about:
  - Adding soc/mediatek/mt6735-pm-domains.h
  - Adding support in mtk-pm-domains:

static const struct of_device_id scpsys_of_match[] = {
	........
	{
		.compatible = "mediatek,mt6735-power-controller",
		.data = &mt6735_scpsys_data,
	},
	.........
};

Cheers,
Angelo

> Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
> ---
diff mbox series

Patch

diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 7a668888111c..b771bfb93cc9 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -13,6 +13,7 @@ 
 #include <linux/regulator/consumer.h>
 #include <linux/soc/mediatek/infracfg.h>
 
+#include <dt-bindings/power/mediatek,mt6735-scpsys.h>
 #include <dt-bindings/power/mt2701-power.h>
 #include <dt-bindings/power/mt2712-power.h>
 #include <dt-bindings/power/mt6797-power.h>
@@ -32,6 +33,7 @@ 
 #define SPM_VEN_PWR_CON			0x0230
 #define SPM_ISP_PWR_CON			0x0238
 #define SPM_DIS_PWR_CON			0x023c
+#define SPM_MD1_PWR_CON			0x0284	/* MT6735 */
 #define SPM_CONN_PWR_CON		0x0280
 #define SPM_VEN2_PWR_CON		0x0298
 #define SPM_AUDIO_PWR_CON		0x029c	/* MT8173, MT2712 */
@@ -57,11 +59,13 @@ 
 #define PWR_ON_2ND_BIT			BIT(3)
 #define PWR_CLK_DIS_BIT			BIT(4)
 
+#define PWR_STATUS_MD1			BIT(0)
 #define PWR_STATUS_CONN			BIT(1)
 #define PWR_STATUS_DISP			BIT(3)
 #define PWR_STATUS_MFG			BIT(4)
 #define PWR_STATUS_ISP			BIT(5)
 #define PWR_STATUS_VDEC			BIT(7)
+#define PWR_STATUS_VEN			BIT(8)	/* MT6735 */
 #define PWR_STATUS_BDP			BIT(14)
 #define PWR_STATUS_ETH			BIT(15)
 #define PWR_STATUS_HIF			BIT(16)
@@ -750,6 +754,73 @@  static const struct scp_subdomain scp_subdomain_mt2712[] = {
 	{MT2712_POWER_DOMAIN_MFG_SC2, MT2712_POWER_DOMAIN_MFG_SC3},
 };
 
+/*
+ * MT6735 power domain support
+ */
+
+static const struct scp_domain_data scp_domain_data_mt6735[] = {
+	[MT6735_POWER_DOMAIN_MD1] = {
+		.name = "md1",
+		.sta_mask = PWR_STATUS_MD1,
+		.ctl_offs = SPM_MD1_PWR_CON,
+		.sram_pdn_bits = GENMASK(8, 8),
+		.sram_pdn_ack_bits = 0,
+		.clk_id = {CLK_NONE},
+		.bus_prot_mask = (BIT(24) | BIT(25) | BIT(26) | BIT(27) | BIT(28)),
+	},
+	[MT6735_POWER_DOMAIN_CONN] = {
+		.name = "conn",
+		.sta_mask = PWR_STATUS_CONN,
+		.ctl_offs = SPM_CONN_PWR_CON,
+		.sram_pdn_bits = GENMASK(8, 8),
+		.sram_pdn_ack_bits = 0,
+		.clk_id = {CLK_NONE},
+		.bus_prot_mask = (BIT(2) | BIT(8)),
+	},
+	[MT6735_POWER_DOMAIN_DIS] = {
+		.name = "dis",
+		.sta_mask = PWR_STATUS_DISP,
+		.ctl_offs = SPM_DIS_PWR_CON,
+		.sram_pdn_bits = GENMASK(11, 8),
+		.sram_pdn_ack_bits = GENMASK(12, 12),
+		.clk_id = {CLK_NONE},
+		.bus_prot_mask = (BIT(1)),
+	},
+	[MT6735_POWER_DOMAIN_MFG] = {
+		.name = "mfg",
+		.sta_mask = PWR_STATUS_MFG,
+		.ctl_offs = SPM_MFG_PWR_CON,
+		.sram_pdn_bits = GENMASK(11, 8),
+		.sram_pdn_ack_bits = GENMASK(12, 12),
+		.clk_id = {CLK_NONE},
+		.bus_prot_mask = BIT(14),
+	},
+	[MT6735_POWER_DOMAIN_ISP] = {
+		.name = "isp",
+		.sta_mask = PWR_STATUS_ISP,
+		.ctl_offs = SPM_ISP_PWR_CON,
+		.sram_pdn_bits = GENMASK(11, 8),
+		.sram_pdn_ack_bits = GENMASK(13, 12),
+		.clk_id = {CLK_NONE},
+	},
+	[MT6735_POWER_DOMAIN_VDE] = {
+		.name = "vde",
+		.sta_mask = PWR_STATUS_VDEC,
+		.ctl_offs = SPM_VDE_PWR_CON,
+		.sram_pdn_bits = GENMASK(11, 8),
+		.sram_pdn_ack_bits = GENMASK(12, 12),
+		.clk_id = {CLK_NONE},
+	},
+	[MT6735_POWER_DOMAIN_VEN] = {
+		.name = "ven",
+		.sta_mask = PWR_STATUS_VEN,
+		.ctl_offs = SPM_VEN_PWR_CON,
+		.sram_pdn_bits = GENMASK(11, 8),
+		.sram_pdn_ack_bits = GENMASK(15, 12),
+		.clk_id = {CLK_NONE},
+	},
+};
+
 /*
  * MT6797 power domain support
  */
@@ -1033,6 +1104,16 @@  static const struct scp_soc_data mt2712_data = {
 	.bus_prot_reg_update = false,
 };
 
+static const struct scp_soc_data mt6735_data = {
+	.domains = scp_domain_data_mt6735,
+	.num_domains = ARRAY_SIZE(scp_domain_data_mt6735),
+	.regs = {
+		.pwr_sta_offs = SPM_PWR_STATUS,
+		.pwr_sta2nd_offs = SPM_PWR_STATUS_2ND
+	},
+	.bus_prot_reg_update = true,
+};
+
 static const struct scp_soc_data mt6797_data = {
 	.domains = scp_domain_data_mt6797,
 	.num_domains = ARRAY_SIZE(scp_domain_data_mt6797),
@@ -1088,6 +1169,9 @@  static const struct of_device_id of_scpsys_match_tbl[] = {
 	}, {
 		.compatible = "mediatek,mt2712-scpsys",
 		.data = &mt2712_data,
+	}, {
+		.compatible = "mediatek,mt6735-scpsys",
+		.data = &mt6735_data,
 	}, {
 		.compatible = "mediatek,mt6797-scpsys",
 		.data = &mt6797_data,