Messages in this thread Patch in this message | | | From | Dmitry Osipenko <> | Subject | [PATCH v1] usb: phy: tegra: Increase PHY clock stabilization timeout | Date | Mon, 11 Dec 2017 01:55:35 +0300 |
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This fixes "utmi_phy_clk_enable: timeout waiting for phy to stabilize" error message.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/usb/phy/phy-tegra-usb.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c index f668bfb708d3..7d5db625f800 100644 --- a/drivers/usb/phy/phy-tegra-usb.c +++ b/drivers/usb/phy/phy-tegra-usb.c @@ -16,7 +16,7 @@ #include <linux/export.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/io.h> +#include <linux/iopoll.h> #include <linux/gpio.h> #include <linux/of.h> #include <linux/of_device.h> @@ -305,14 +305,9 @@ static int utmip_pad_power_off(struct tegra_usb_phy *phy) static int utmi_wait_register(void __iomem *reg, u32 mask, u32 result) { - unsigned long timeout = 2000; - do { - if ((readl(reg) & mask) == result) - return 0; - udelay(1); - timeout--; - } while (timeout); - return -1; + u32 tmp; + + return readl_poll_timeout(reg, tmp, (tmp & mask) == result, 1, 5000); } static void utmi_phy_clk_disable(struct tegra_usb_phy *phy) -- 2.15.1
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