Commit 626a630e authored by Reinder de Haan's avatar Reinder de Haan Committed by Kishon Vijay Abraham I

phy-sun4i-usb: Add support for the host usb-phys found on the H3 SoC

Note this commit only adds support for phys 1-3, phy 0, the otg phy, is
not yet (fully) supported after this commit.
Signed-off-by: default avatarReinder de Haan <patchesrdh@mveas.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 68dbc2ce
......@@ -9,6 +9,7 @@ Required properties:
* allwinner,sun7i-a20-usb-phy
* allwinner,sun8i-a23-usb-phy
* allwinner,sun8i-a33-usb-phy
* allwinner,sun8i-h3-usb-phy
- reg : a list of offset + length pairs
- reg-names :
* "phy_ctrl"
......
......@@ -47,6 +47,9 @@
#define REG_PHYBIST 0x08
#define REG_PHYTUNE 0x0c
#define REG_PHYCTL_A33 0x10
#define REG_PHY_UNK_H3 0x20
#define REG_PMU_UNK_H3 0x10
#define PHYCTL_DATA BIT(7)
......@@ -80,7 +83,7 @@
#define PHY_DISCON_TH_SEL 0x2a
#define PHY_SQUELCH_DETECT 0x3c
#define MAX_PHYS 3
#define MAX_PHYS 4
/*
* Note do not raise the debounce time, we must report Vusb high within 100ms
......@@ -92,6 +95,7 @@
enum sun4i_usb_phy_type {
sun4i_a10_phy,
sun8i_a33_phy,
sun8i_h3_phy,
};
struct sun4i_usb_phy_cfg {
......@@ -239,6 +243,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int ret;
u32 val;
ret = clk_prepare_enable(phy->clk);
if (ret)
......@@ -250,6 +255,15 @@ static int sun4i_usb_phy_init(struct phy *_phy)
return ret;
}
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)
sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
......@@ -260,6 +274,7 @@ static int sun4i_usb_phy_init(struct phy *_phy)
/* Disconnect threshold adjustment */
sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
data->cfg->disc_thresh, 2);
}
sun4i_usb_phy_passby(phy, 1);
......@@ -726,6 +741,13 @@ static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
.dedicated_clocks = true,
};
static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
.num_phys = 4,
.type = sun8i_h3_phy,
.disc_thresh = 3,
.dedicated_clocks = true,
};
static const struct of_device_id sun4i_usb_phy_of_match[] = {
{ .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
{ .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
......@@ -733,6 +755,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = {
{ .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
{ .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 },
{ },
};
MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
......
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