On Thursday 07 December 2017 05:23 PM, Chunfeng Yun wrote:
> When system is running, if usb2 phy is forced to bypass utmi signals,
> all PLL will be turned off, and it can't detect device connection
> anymore, so replace force mode with auto mode which can bypass utmi
> signals automatically if no device attached for normal flow.
> But keep the force mode to fix RX sensitivity degradation issue.
>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
merged this series.
Thanks
Kishon
> ---
> drivers/phy/mediatek/phy-mtk-tphy.c | 19 +++++++------------
> 1 file changed, 7 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
> index fb8aba4..5d9d7f3 100644
> --- a/drivers/phy/mediatek/phy-mtk-tphy.c
> +++ b/drivers/phy/mediatek/phy-mtk-tphy.c
> @@ -440,9 +440,9 @@ static void u2_phy_instance_init(struct mtk_tphy *tphy,
> u32 index = instance->index;
> u32 tmp;
>
> - /* switch to USB function. (system register, force ip into usb mode) */
> + /* switch to USB function, and enable usb pll */
> tmp = readl(com + U3P_U2PHYDTM0);
> - tmp &= ~P2C_FORCE_UART_EN;
> + tmp &= ~(P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM);
> tmp |= P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0);
> writel(tmp, com + U3P_U2PHYDTM0);
>
> @@ -502,10 +502,8 @@ static void u2_phy_instance_power_on(struct mtk_tphy *tphy,
> u32 index = instance->index;
> u32 tmp;
>
> - /* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */
> tmp = readl(com + U3P_U2PHYDTM0);
> - tmp &= ~(P2C_FORCE_SUSPENDM | P2C_RG_XCVRSEL);
> - tmp &= ~(P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
> + tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK);
> writel(tmp, com + U3P_U2PHYDTM0);
>
> /* OTG Enable */
> @@ -540,7 +538,6 @@ static void u2_phy_instance_power_off(struct mtk_tphy *tphy,
>
> tmp = readl(com + U3P_U2PHYDTM0);
> tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN);
> - tmp |= P2C_FORCE_SUSPENDM;
> writel(tmp, com + U3P_U2PHYDTM0);
>
> /* OTG Disable */
> @@ -548,18 +545,16 @@ static void u2_phy_instance_power_off(struct mtk_tphy *tphy,
> tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN;
> writel(tmp, com + U3P_USBPHYACR6);
>
> - /* let suspendm=0, set utmi into analog power down */
> - tmp = readl(com + U3P_U2PHYDTM0);
> - tmp &= ~P2C_RG_SUSPENDM;
> - writel(tmp, com + U3P_U2PHYDTM0);
> - udelay(1);
> -
> tmp = readl(com + U3P_U2PHYDTM1);
> tmp &= ~(P2C_RG_VBUSVALID | P2C_RG_AVALID);
> tmp |= P2C_RG_SESSEND;
> writel(tmp, com + U3P_U2PHYDTM1);
>
> if (tphy->pdata->avoid_rx_sen_degradation && index) {
> + tmp = readl(com + U3P_U2PHYDTM0);
> + tmp &= ~(P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM);
> + writel(tmp, com + U3P_U2PHYDTM0);
> +
> tmp = readl(com + U3D_U2PHYDCR0);
> tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON;
> writel(tmp, com + U3D_U2PHYDCR0);
>
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