[PATCH v4 13/19] usb: ohci-at91: Add USB PHY functionality

[Sergiu Moga]

Add the ability to enable/disable whatever USB PHY's are
passed to the AT91 OHCI driver through DT.

Signed-off-by: Sergiu Moga <sergiu.m...@microchip.com>
Tested-by: Mihai Sain <mihai.s...@microchip.com>
---


v1 -> v4:
- No change



 drivers/usb/host/ohci-at91.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 8a10a29564..4b1aff4127 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -74,6 +74,10 @@ int usb_cpu_init_fail(void)
 #include <usb.h>
 #include "ohci.h"
 
+#if CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)
+#include <generic-phy.h>
+#endif
+
 #define AT91_MAX_USBH_PORTS        3
 
 #define at91_for_each_port(index)      \
@@ -90,6 +94,10 @@ struct ohci_at91_priv {
        struct clk *fclk;
        struct clk *hclk;
        bool clocked;
+
+#if CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)
+       struct phy phy[AT91_MAX_USBH_PORTS];
+#endif
 };
 
 static void at91_start_clock(struct ohci_at91_priv *ohci_at91)
@@ -97,6 +105,13 @@ static void at91_start_clock(struct ohci_at91_priv 
*ohci_at91)
        if (ohci_at91->clocked)
                return;
 
+#if CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)
+       int i;
+
+       at91_for_each_port(i)
+               generic_phy_power_on(&ohci_at91->phy[i]);
+#endif
+
        clk_set_rate(ohci_at91->fclk, 48000000);
        clk_prepare_enable(ohci_at91->hclk);
        clk_prepare_enable(ohci_at91->iclk);
@@ -109,6 +124,13 @@ static void at91_stop_clock(struct ohci_at91_priv 
*ohci_at91)
        if (!ohci_at91->clocked)
                return;
 
+#if CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)
+       int i;
+
+       at91_for_each_port(i)
+               generic_phy_power_off(&ohci_at91->phy[i]);
+#endif
+
        clk_disable_unprepare(ohci_at91->fclk);
        clk_disable_unprepare(ohci_at91->iclk);
        clk_disable_unprepare(ohci_at91->hclk);
@@ -214,6 +236,14 @@ static int ohci_atmel_probe(struct udevice *dev)
                goto fail;
        }
 
+#if CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)
+       at91_for_each_port(i) {
+               generic_phy_get_by_index(dev, i, &ohci_at91->phy[i]);
+               generic_phy_init(&ohci_at91->phy[i]);
+               generic_phy_configure(&ohci_at91->phy[i], NULL);
+       }
+#endif
+
        at91_start_hc(dev);
 
        return ohci_register(dev, regs);
@@ -228,6 +258,7 @@ fail:
 
 static const struct udevice_id ohci_usb_ids[] = {
        { .compatible = "atmel,at91rm9200-ohci", },
+       { .compatible = "microchip,sama7g5-ohci", },
        { }
 };
 
-- 
2.34.1