linux-kernel - Re: [PATCH] phy: cadence: sierra: Fix for USB3 U1/U2 state

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Date:   Mon, 18 May 2020 15:29:14 +0300
From:   Roger Quadros <rogerq@...com>
To:     Sanket Parmar <sparmar@...ence.com>, <kishon@...com>
CC:     <linux-kernel@...r.kernel.org>, <vkoul@...nel.org>,
        <sjakhade@...ence.com>, <kurahul@...ence.com>,
        <pawell@...ence.com>, <jpawar@...ence.com>, <nsekhar@...com>
Subject: Re: [PATCH] phy: cadence: sierra: Fix for USB3 U1/U2 state



On 18/05/2020 15:14, Sanket Parmar wrote:
> Updated values of USB3 related Sierra PHY registers.
> This change fixes USB3 device disconnect issue observed
> while enternig U1/U2 state.
> 
> Signed-off-by: Sanket Parmar <sparmar@...ence.com>

Reviewed-by: Roger Quadros <rogerq@...com>

> ---
>   drivers/phy/cadence/phy-cadence-sierra.c | 27 ++++++++++++++-------------
>   1 file changed, 14 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
> index a5c08e5..faed652 100644
> --- a/drivers/phy/cadence/phy-cadence-sierra.c
> +++ b/drivers/phy/cadence/phy-cadence-sierra.c
> @@ -685,10 +685,10 @@ static struct cdns_reg_pairs cdns_usb_cmn_regs_ext_ssc[] = {
>   static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
>   	{0xFE0A, SIERRA_DET_STANDEC_A_PREG},
>   	{0x000F, SIERRA_DET_STANDEC_B_PREG},
> -	{0x00A5, SIERRA_DET_STANDEC_C_PREG},
> +	{0x55A5, SIERRA_DET_STANDEC_C_PREG},
>   	{0x69ad, SIERRA_DET_STANDEC_D_PREG},
>   	{0x0241, SIERRA_DET_STANDEC_E_PREG},
> -	{0x0010, SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG},
> +	{0x0110, SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG},
>   	{0x0014, SIERRA_PSM_A0IN_TMR_PREG},
>   	{0xCF00, SIERRA_PSM_DIAG_PREG},
>   	{0x001F, SIERRA_PSC_TX_A0_PREG},
> @@ -696,7 +696,7 @@ static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
>   	{0x0003, SIERRA_PSC_TX_A2_PREG},
>   	{0x0003, SIERRA_PSC_TX_A3_PREG},
>   	{0x0FFF, SIERRA_PSC_RX_A0_PREG},
> -	{0x0619, SIERRA_PSC_RX_A1_PREG},
> +	{0x0003, SIERRA_PSC_RX_A1_PREG},
>   	{0x0003, SIERRA_PSC_RX_A2_PREG},
>   	{0x0001, SIERRA_PSC_RX_A3_PREG},
>   	{0x0001, SIERRA_PLLCTRL_SUBRATE_PREG},
> @@ -705,19 +705,19 @@ static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
>   	{0x00CA, SIERRA_CLKPATH_BIASTRIM_PREG},
>   	{0x2512, SIERRA_DFE_BIASTRIM_PREG},
>   	{0x0000, SIERRA_DRVCTRL_ATTEN_PREG},
> -	{0x873E, SIERRA_CLKPATHCTRL_TMR_PREG},
> -	{0x03CF, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
> -	{0x01CE, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
> +	{0x823E, SIERRA_CLKPATHCTRL_TMR_PREG},
> +	{0x078F, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
> +	{0x078F, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
>   	{0x7B3C, SIERRA_CREQ_CCLKDET_MODE01_PREG},
> -	{0x033F, SIERRA_RX_CTLE_MAINTENANCE_PREG},
> +	{0x023C, SIERRA_RX_CTLE_MAINTENANCE_PREG},
>   	{0x3232, SIERRA_CREQ_FSMCLK_SEL_PREG},
>   	{0x0000, SIERRA_CREQ_EQ_CTRL_PREG},
> -	{0x8000, SIERRA_CREQ_SPARE_PREG},
> +	{0x0000, SIERRA_CREQ_SPARE_PREG},
>   	{0xCC44, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG},
> -	{0x8453, SIERRA_CTLELUT_CTRL_PREG},
> -	{0x4110, SIERRA_DFE_ECMP_RATESEL_PREG},
> -	{0x4110, SIERRA_DFE_SMP_RATESEL_PREG},
> -	{0x0002, SIERRA_DEQ_PHALIGN_CTRL},
> +	{0x8452, SIERRA_CTLELUT_CTRL_PREG},
> +	{0x4121, SIERRA_DFE_ECMP_RATESEL_PREG},
> +	{0x4121, SIERRA_DFE_SMP_RATESEL_PREG},
> +	{0x0003, SIERRA_DEQ_PHALIGN_CTRL},
>   	{0x3200, SIERRA_DEQ_CONCUR_CTRL1_PREG},
>   	{0x5064, SIERRA_DEQ_CONCUR_CTRL2_PREG},
>   	{0x0030, SIERRA_DEQ_EPIPWR_CTRL2_PREG},
> @@ -725,7 +725,7 @@ static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
>   	{0x5A5A, SIERRA_DEQ_ERRCMP_CTRL_PREG},
>   	{0x02F5, SIERRA_DEQ_OFFSET_CTRL_PREG},
>   	{0x02F5, SIERRA_DEQ_GAIN_CTRL_PREG},
> -	{0x9A8A, SIERRA_DEQ_VGATUNE_CTRL_PREG},
> +	{0x9999, SIERRA_DEQ_VGATUNE_CTRL_PREG},
>   	{0x0014, SIERRA_DEQ_GLUT0},
>   	{0x0014, SIERRA_DEQ_GLUT1},
>   	{0x0014, SIERRA_DEQ_GLUT2},
> @@ -772,6 +772,7 @@ static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
>   	{0x000F, SIERRA_LFPSFILT_NS_PREG},
>   	{0x0009, SIERRA_LFPSFILT_RD_PREG},
>   	{0x0001, SIERRA_LFPSFILT_MP_PREG},
> +	{0x6013, SIERRA_SIGDET_SUPPORT_PREG},
>   	{0x8013, SIERRA_SDFILT_H2L_A_PREG},
>   	{0x8009, SIERRA_SDFILT_L2H_PREG},
>   	{0x0024, SIERRA_RXBUFFER_CTLECTRL_PREG},
> 

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