[PATCH 03/51] phy: sun4i: add support for A64 usb phy

[Kishon Vijay Abraham I]

From: Icenowy Zheng <icen...@aosc.xyz>

There's something unknown in the pmu part that shared with H3.
It's renamed as PMU_UNK1 from PMU_UNK_H3.

Signed-off-by: Icenowy Zheng <icen...@aosc.xyz>
Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com>
---
 drivers/phy/phy-sun4i-usb.c |   35 +++++++++++++++++++++++++++++------
 1 file changed, 29 insertions(+), 6 deletions(-)

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index 8c7eb33..fcf4d95 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -50,7 +50,7 @@
 #define REG_PHYCTL_A33                 0x10
 #define REG_PHY_UNK_H3                 0x20
 
-#define REG_PMU_UNK_H3                 0x10
+#define REG_PMU_UNK1                   0x10
 
 #define PHYCTL_DATA                    BIT(7)
 
@@ -98,6 +98,7 @@ enum sun4i_usb_phy_type {
        sun6i_a31_phy,
        sun8i_a33_phy,
        sun8i_h3_phy,
+       sun50i_a64_phy,
 };
 
 struct sun4i_usb_phy_cfg {
@@ -106,6 +107,7 @@ struct sun4i_usb_phy_cfg {
        u32 disc_thresh;
        u8 phyctl_offset;
        bool dedicated_clocks;
+       bool enable_pmu_unk1;
 };
 
 struct sun4i_usb_phy_data {
@@ -183,8 +185,9 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, 
u32 addr, u32 data,
 
        mutex_lock(&phy_data->mutex);
 
-       if (phy_data->cfg->type == sun8i_a33_phy) {
-               /* A33 needs us to set phyctl to 0 explicitly */
+       if (phy_data->cfg->type == sun8i_a33_phy ||
+           phy_data->cfg->type == sun50i_a64_phy) {
+               /* A33 or A64 needs us to set phyctl to 0 explicitly */
                writel(0, phyctl);
        }
 
@@ -258,14 +261,16 @@ static int sun4i_usb_phy_init(struct phy *_phy)
                return ret;
        }
 
+       if (data->cfg->enable_pmu_unk1) {
+               val = readl(phy->pmu + REG_PMU_UNK1);
+               writel(val & ~2, phy->pmu + REG_PMU_UNK1);
+       }
+
        if (data->cfg->type == sun8i_h3_phy) {
                if (phy->index == 0) {
                        val = readl(data->base + REG_PHY_UNK_H3);
                        writel(val & ~1, data->base + REG_PHY_UNK_H3);
                }
-
-               val = readl(phy->pmu + REG_PMU_UNK_H3);
-               writel(val & ~2, phy->pmu + REG_PMU_UNK_H3);
        } else {
                /* Enable USB 45 Ohm resistor calibration */
                if (phy->index == 0)
@@ -737,6 +742,7 @@ static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
        .disc_thresh = 3,
        .phyctl_offset = REG_PHYCTL_A10,
        .dedicated_clocks = false,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
@@ -745,6 +751,7 @@ static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
        .disc_thresh = 2,
        .phyctl_offset = REG_PHYCTL_A10,
        .dedicated_clocks = false,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
@@ -753,6 +760,7 @@ static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
        .disc_thresh = 3,
        .phyctl_offset = REG_PHYCTL_A10,
        .dedicated_clocks = true,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
@@ -761,6 +769,7 @@ static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
        .disc_thresh = 2,
        .phyctl_offset = REG_PHYCTL_A10,
        .dedicated_clocks = false,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
@@ -769,6 +778,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
        .disc_thresh = 3,
        .phyctl_offset = REG_PHYCTL_A10,
        .dedicated_clocks = true,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
@@ -777,6 +787,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
        .disc_thresh = 3,
        .phyctl_offset = REG_PHYCTL_A33,
        .dedicated_clocks = true,
+       .enable_pmu_unk1 = false,
 };
 
 static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
@@ -784,6 +795,16 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
        .type = sun8i_h3_phy,
        .disc_thresh = 3,
        .dedicated_clocks = true,
+       .enable_pmu_unk1 = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
+       .num_phys = 2,
+       .type = sun50i_a64_phy,
+       .disc_thresh = 3,
+       .phyctl_offset = REG_PHYCTL_A33,
+       .dedicated_clocks = true,
+       .enable_pmu_unk1 = true,
 };
 
 static const struct of_device_id sun4i_usb_phy_of_match[] = {
@@ -794,6 +815,8 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = 
{
        { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
        { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
        { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg },
+       { .compatible = "allwinner,sun50i-a64-usb-phy",
+         .data = &sun50i_a64_cfg},
        { },
 };
 MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
-- 
1.7.9.5