[U-Boot] [PATCH v6 16/20] phy: sun4i-usb: Use CLK and RESET support

Jagan Teki
2019-01-10T18:40:12Z

Now clock and reset drivers are available for respective
SoC's so use clk and reset ops on phy driver.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Marek Vasut <marex@denx.de>
---
drivers/phy/allwinner/phy-sun4i-usb.c | 77 ++++++++++++++++++++-------
1 file changed, 57 insertions(+), 20 deletions(-)

diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c
index a7d7e3f044..f206fa3f5d 100644
--- a/drivers/phy/allwinner/phy-sun4i-usb.c
+++ b/drivers/phy/allwinner/phy-sun4i-usb.c
@@ -11,10 +11,12 @@
*/

#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <dm/device.h>
#include <generic-phy.h>
#include <phy-sun4i-usb.h>
+#include <reset.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
@@ -80,6 +82,7 @@ struct sun4i_usb_phy_cfg {
enum sun4i_usb_phy_type type;
u32 disc_thresh;
u8 phyctl_offset;
+ bool dedicated_clocks;
bool enable_pmu_unk1;
bool phy0_dual_route;
};
@@ -88,30 +91,21 @@ struct sun4i_usb_phy_info {
const char *gpio_vbus;
const char *gpio_vbus_det;
const char *gpio_id_det;
- int rst_mask;
} phy_info[] = {
{
.gpio_vbus = CONFIG_USB0_VBUS_PIN,
.gpio_vbus_det = CONFIG_USB0_VBUS_DET,
.gpio_id_det = CONFIG_USB0_ID_DET,
- .rst_mask = (CCM_USB_CTRL_PHY0_RST | CCM_USB_CTRL_PHY0_CLK),
},
{
.gpio_vbus = CONFIG_USB1_VBUS_PIN,
.gpio_vbus_det = NULL,
.gpio_id_det = NULL,
- .rst_mask = (CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK),
},
{
.gpio_vbus = CONFIG_USB2_VBUS_PIN,
.gpio_vbus_det = NULL,
.gpio_id_det = NULL,
-#ifdef CONFIG_MACH_SUN8I_A83T
- .rst_mask = (CCM_USB_CTRL_HSIC_RST | CCM_USB_CTRL_HSIC_CLK |
- CCM_USB_CTRL_12M_CLK),
-#else
- .rst_mask = (CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK),
-#endif
},
{
.gpio_vbus = CONFIG_USB3_VBUS_PIN,
@@ -126,13 +120,13 @@ struct sun4i_usb_phy_plat {
int gpio_vbus;
int gpio_vbus_det;
int gpio_id_det;
- int rst_mask;
+ struct clk clocks;
+ struct reset_ctl resets;
int id;
};

struct sun4i_usb_phy_data {
void __iomem *base;
- struct sunxi_ccm_reg *ccm;
const struct sun4i_usb_phy_cfg *cfg;
struct sun4i_usb_phy_plat *usb_phy;
};
@@ -266,8 +260,19 @@ static int sun4i_usb_phy_init(struct phy *phy)
struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
u32 val;
+ int ret;

- setbits_le32(&data->ccm->usb_clk_cfg, usb_phy->rst_mask);
+ ret = clk_enable(&usb_phy->clocks);
+ if (ret) {
+ dev_err(dev, "failed to enable usb_%ldphy clock\n", phy->id);
+ return ret;
+ }
+
+ ret = reset_deassert(&usb_phy->resets);
+ if (ret) {
+ dev_err(dev, "failed to deassert usb_%ldreset reset\n", phy->id);
+ return ret;
+ }

if (data->cfg->type == sun8i_a83t_phy) {
if (phy->id == 0) {
@@ -308,6 +313,7 @@ static int sun4i_usb_phy_exit(struct phy *phy)
{
struct sun4i_usb_phy_data *data = dev_get_priv(phy->dev);
struct sun4i_usb_phy_plat *usb_phy = &data->usb_phy[phy->id];
+ int ret;

if (phy->id == 0) {
if (data->cfg->type == sun8i_a83t_phy) {
@@ -320,7 +326,17 @@ static int sun4i_usb_phy_exit(struct phy *phy)

sun4i_usb_phy_passby(phy, false);

- clrbits_le32(&data->ccm->usb_clk_cfg, usb_phy->rst_mask);
+ ret = clk_disable(&usb_phy->clocks);
+ if (ret) {
+ dev_err(dev, "failed to disable usb_%ldphy clock\n", phy->id);
+ return ret;
+ }
+
+ ret = reset_assert(&usb_phy->resets);
+ if (ret) {
+ dev_err(dev, "failed to assert usb_%ldreset reset\n", phy->id);
+ return ret;
+ }

return 0;
}
@@ -407,10 +423,6 @@ static int sun4i_usb_phy_probe(struct udevice *dev)
if (IS_ERR(data->base))
return PTR_ERR(data->base);

- data->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
- if (IS_ERR(data->ccm))
- return PTR_ERR(data->ccm);
-
data->usb_phy = plat;
for (i = 0; i < data->cfg->num_phys; i++) {
struct sun4i_usb_phy_plat *phy = &plat[i];
@@ -448,6 +460,24 @@ static int sun4i_usb_phy_probe(struct udevice *dev)
sunxi_gpio_set_pull(phy->gpio_id_det, SUNXI_GPIO_PULL_UP);
}

+ if (data->cfg->dedicated_clocks)
+ snprintf(name, sizeof(name), "usb%d_phy", i);
+ else
+ strlcpy(name, "usb_phy", sizeof(name));
+
+ ret = clk_get_by_name(dev, name, &phy->clocks);
+ if (ret) {
+ dev_err(dev, "failed to get usb%d_phy clock phandle\n", i);
+ return ret;
+ }
+
+ snprintf(name, sizeof(name), "usb%d_reset", i);
+ ret = reset_get_by_name(dev, name, &phy->resets);
+ if (ret) {
+ dev_err(dev, "failed to get usb%d_reset reset phandle\n", i);
+ return ret;
+ }
+
if (i || data->cfg->phy0_dual_route) {
snprintf(name, sizeof(name), "pmu%d", i);
phy->pmu = (void __iomem *)devfdt_get_addr_name(dev, name);
@@ -456,9 +486,6 @@ static int sun4i_usb_phy_probe(struct udevice *dev)
}

phy->id = i;
- phy->rst_mask = info->rst_mask;
- if ((data->cfg->type == sun8i_h3_phy) && (phy->id == 3))
- phy->rst_mask = (BIT(3) | BIT(11));
};

debug("Allwinner Sun4I USB PHY driver loaded\n");
@@ -470,6 +497,7 @@ static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
.type = sun4i_a10_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
.enable_pmu_unk1 = false,
};

@@ -478,6 +506,7 @@ static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
.type = sun4i_a10_phy,
.disc_thresh = 2,
.phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
.enable_pmu_unk1 = false,
};

@@ -486,6 +515,7 @@ static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
.type = sun6i_a31_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = false,
};

@@ -494,6 +524,7 @@ static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
.type = sun4i_a10_phy,
.disc_thresh = 2,
.phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = false,
.enable_pmu_unk1 = false,
};

@@ -502,6 +533,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
.type = sun4i_a10_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A10,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = false,
};

@@ -510,6 +542,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
.type = sun8i_a33_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = false,
};

@@ -517,6 +550,7 @@ static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg = {
.num_phys = 3,
.type = sun8i_a83t_phy,
.phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
};

static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
@@ -524,6 +558,7 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
.type = sun8i_h3_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = true,
.phy0_dual_route = true,
};
@@ -533,6 +568,7 @@ static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = {
.type = sun8i_v3s_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = true,
.phy0_dual_route = true,
};
@@ -542,6 +578,7 @@ static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
.type = sun50i_a64_phy,
.disc_thresh = 3,
.phyctl_offset = REG_PHYCTL_A33,
+ .dedicated_clocks = true,
.enable_pmu_unk1 = true,
.phy0_dual_route = true,
};
--
2.18.0.321.gffc6fa0e3