[U-Boot] [PATCH 6/8] armv7: Add workaround for USB erratum A-009798

[York Sun]

On 07/09/2017 07:41 PM, Ran Wang wrote:
> The default setting for USB High Speed Squelch Threshold results
> in a threshold close to or lower than 100mV. This leads to Receive
> Compliance test failure for a 100mV threshold.
> 
> The changes shift the threshold from ~100mV towards ~130mV resulting
> in passing of USB High Speed Receiver Sensitivity Compliance test.
> 
> Signed-off-by: Sriram Dash <sriram.dash at nxp.com>
> Signed-off-by: Rajesh Bhagat <rajesh.bhagat at nxp.com>
> Signed-off-by: Suresh Gupta <suresh.gupta at nxp.com>
> Signed-off-by: Ran Wang <ran.wang_1 at nxp.com>
> ---
>   arch/arm/cpu/armv7/ls102xa/Kconfig                | 8 +++++++-
>   arch/arm/cpu/armv7/ls102xa/soc.c                  | 9 +++++++++
>   arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 1 +
>   3 files changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig
> index 11e33d6..c605fc0 100644
> --- a/arch/arm/cpu/armv7/ls102xa/Kconfig
> +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig
> @@ -6,6 +6,7 @@ config ARCH_LS1021A
>   	select SYS_FSL_ERRATUM_A009942
>   	select SYS_FSL_ERRATUM_A010315
>   	select SYS_FSL_ERRATUM_A009008
> +	select SYS_FSL_ERRATUM_A009798
>   	select SYS_FSL_SRDS_1
>   	select SYS_HAS_SERDES
>   	select SYS_FSL_DDR_BE if SYS_FSL_DDR
> @@ -54,7 +55,12 @@ config SYS_FSL_ERRATUM_A010315
>   config SYS_FSL_ERRATUM_A009008
>   	bool
>   	help
> -		Workaround for USB erratum A009008
> +		Workaround for USB PHY erratum A009008
> +
> +config SYS_FSL_ERRATUM_A009798
> +	bool
> +	help
> +		Workaround for USB PHY erratum A009798
>   
>   config SYS_FSL_SRDS_1
>   	bool
> diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
> index 986337d..ef44a6c 100644
> --- a/arch/arm/cpu/armv7/ls102xa/soc.c
> +++ b/arch/arm/cpu/armv7/ls102xa/soc.c
> @@ -70,6 +70,14 @@ static void erratum_a009008(void)
>   #endif /* CONFIG_SYS_FSL_ERRATUM_A009008 */
>   }
>   
> +static void erratum_a009798(void)
> +{
> +#ifdef CONFIG_SYS_FSL_ERRATUM_A009798
> +	u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
> +	u32 val = in_be32(scfg + SCFG_USB3PRM1CR / 4);

Put a blank line here.

York