linux-kernel - Re: [PATCH v2 2/2] phy: qcom: qmp-pcie: Add Gen4 4-lanes mode for X1E80100

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Message-ID: <ZsbgNmHYj3jE9CpO@hovoldconsulting.com>
Date: Thu, 22 Aug 2024 08:52:38 +0200
From: Johan Hovold <johan@...nel.org>
To: Abel Vesa <abel.vesa@...aro.org>
Cc: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org,
	linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] phy: qcom: qmp-pcie: Add Gen4 4-lanes mode for
 X1E80100

On Wed, Aug 21, 2024 at 11:39:01AM +0300, Abel Vesa wrote:
> The sixth PCIe controller on X1E80100 can be used in either
> 4-lanes mode or 2-lanes mode. Add the configuration and compatible
> for the 4-lane mode.
> 
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 42 ++++++++++++++++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> index a7e2ce0c500d..df1ebc19c117 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> @@ -1266,6 +1266,10 @@ static const struct qmp_phy_init_tbl x1e80100_qmp_gen4x2_pcie_ln_shrd_tbl[] = {
>  	QMP_PHY_INIT_CFG(QSERDES_V6_LN_SHRD_RX_SUMMER_CAL_SPD_MODE, 0x5b),
>  };
>  
> +static const struct qmp_phy_init_tbl x1e80100_qmp_gen4x4_pcie_serdes_4ln_tbl[] = {
> +	QMP_PHY_INIT_CFG(QSERDES_V6_COM_PLL_BIAS_EN_CLK_BUFLR_EN, 0x1c),
> +};

Nit: This is a serdes subtable (override) so should go under the serdes
table above (not ln_shrd).

Looks good otherwise:

Reviewed-by: Johan Hovold <johan+linaro@...nel.org>

Johan