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phy: usb: Disable phy auto-suspend

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The BDC block requires the PLL lock in order to grab the PLL clock.
The phy auto-suspend feature turns off the phy when nothing is attached
leading to the PLL to not lock. This leads the BDC block to grab the AUX
clock instead of the PLL clock. This is not ideal, so lets turn this
feature off.

Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/1665005418-15807-5-git-send-email-justinpopo6@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Justin Chen 2022-10-05 14:30:16 -07:00 • committed by Vinod Koul
parent 7e81153d0f
commit 833c173eba
1 changed files with 6 additions and 0 deletions
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6
drivers/phy/broadcom/phy-brcm-usb-init-synopsys.c
View file

@ -62,6 +62,7 @@
/* Register definitions for the USB_PHY block in 7211b0 */
#define USB_PHY_PLL_CTL 0x00
#define USB_PHY_PLL_CTL_PLL_SUSPEND_MASK BIT(27)
#define USB_PHY_PLL_CTL_PLL_RESETB_MASK BIT(30)
#define USB_PHY_PLL_LDO_CTL 0x08
#define USB_PHY_PLL_LDO_CTL_AFE_BG_PWRDWNB_MASK BIT(0)
@ -259,6 +260,11 @@ static void usb_init_common_7211b0(struct brcm_usb_init_params *params)
brcm_usb_writel(reg, usb_phy + USB_PHY_UTMI_CTL_1);
}
/* Disable PLL auto suspend */
reg = brcm_usb_readl(usb_phy + USB_PHY_PLL_CTL);
reg |= USB_PHY_PLL_CTL_PLL_SUSPEND_MASK;
brcm_usb_writel(reg, usb_phy + USB_PHY_PLL_CTL);
/* Init the PHY */
reg = USB_PHY_PLL_LDO_CTL_AFE_CORERDY_MASK |
USB_PHY_PLL_LDO_CTL_AFE_LDO_PWRDWNB_MASK |