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authorReinder de Haan <patchesrdh@mveas.com>2015-12-11 18:32:18 +0300
committerKishon Vijay Abraham I <kishon@ti.com>2015-12-20 12:51:38 +0300
commit626a630e003c10c800a816cb994b3f9e505a88a9 (patch)
tree33247943a520eef9b9b027d0bb49ef7ef4f1aef5 /drivers/phy
parent68dbc2ce77bbe18a0475a497f4d6adde7c5d0b0c (diff)
downloadlinux-626a630e003c10c800a816cb994b3f9e505a88a9.tar.xz
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: Reinder de Haan <patchesrdh@mveas.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/phy-sun4i-usb.c41
1 files changed, 32 insertions, 9 deletions
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index 35b1fa3b71fe..bae54f7a1f48 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -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)
@@ -250,16 +255,26 @@ static int sun4i_usb_phy_init(struct phy *_phy)
return ret;
}
- /* Enable USB 45 Ohm resistor calibration */
- if (phy->index == 0)
- sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1);
+ 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);
- /* Adjust PHY's magnitude and rate */
- sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
+ /* Adjust PHY's magnitude and rate */
+ sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
- /* Disconnect threshold adjustment */
- sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
- data->cfg->disc_thresh, 2);
+ /* 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);