[PATCH v4 3/3] usb: ohci-at91: Add USB PHY functionality
Eugen Hristev
eugen.hristev at collabora.com
Thu Jun 22 15:07:01 CEST 2023
From: Sergiu Moga <sergiu.moga at microchip.com>
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.moga at microchip.com>
Tested-by: Mihai Sain <mihai.sain at microchip.com>
Reviewed-by: Marek Vasut <marex at denx.de>
[eugen.hristev at collabora.com: disable PHYs in at91_start_clock if
clk_enable_bulk fails]
Signed-off-by: Eugen Hristev <eugen.hristev at collabora.com>
---
v1 -> v2:
- use *_bulk API's
v2 -> v3:
- use if (CONFIG_IS_ENABLED(...))
v3 -> v4
[eugen.hristev at collabora.com: disable PHYs in at91_start_clock if
clk_enable_bulk fails]
drivers/usb/host/ohci-at91.c | 34 +++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index 92d0ab7184c4..3d4f31d240aa 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -73,6 +73,7 @@ int usb_cpu_init_fail(void)
#include <asm/gpio.h>
#include <usb.h>
#include "ohci.h"
+#include <generic-phy.h>
#define AT91_MAX_USBH_PORTS 3
@@ -90,15 +91,36 @@ struct at91_usbh_data {
struct ohci_at91_priv {
ohci_t ohci;
struct clk_bulk clks;
+ struct phy_bulk phys;
};
static int at91_start_clock(struct ohci_at91_priv *ohci_at91)
{
- return clk_enable_bulk(&ohci_at91->clks);
+ int ret;
+
+ if (CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)) {
+ ret = generic_phy_power_on_bulk(&ohci_at91->phys);
+ if (ret)
+ return ret;
+ }
+
+ ret = clk_enable_bulk(&ohci_at91->clks);
+ if (ret)
+ generic_phy_power_off_bulk(&ohci_at91->phys);
+
+ return ret;
}
static int at91_stop_clock(struct ohci_at91_priv *ohci_at91)
{
+ if (CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)) {
+ int ret;
+
+ ret = generic_phy_power_off_bulk(&ohci_at91->phys);
+ if (ret)
+ return ret;
+ }
+
return clk_disable_bulk(&ohci_at91->clks);
}
@@ -185,6 +207,16 @@ static int ohci_atmel_probe(struct udevice *dev)
if (ret)
goto fail;
+ if (CONFIG_IS_ENABLED(PHY_MICROCHIP_SAMA7_USB)) {
+ ret = generic_phy_get_bulk(dev, &ohci_at91->phys);
+ if (ret)
+ goto fail;
+
+ ret = generic_phy_init_bulk(&ohci_at91->phys);
+ if (ret)
+ goto fail;
+ }
+
ret = at91_start_hc(dev);
if (ret)
goto fail;
--
2.34.1
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