Re: [PATCH v6 5/8] phy: freescale: pcie: Initialize the imx8 pcie standalone phy driver

Vinod Koul
2021-12-02T04:30:26Z

On 18-11-21, 09:54, Richard Zhu wrote:
> Add the standalone i.MX8 PCIe PHY driver.
>
> Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
> Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> Reviewed-by: Tim Harvey <tharvey@gateworks.com>
> Tested-by: Tim Harvey <tharvey@gateworks.com>
> ---
> drivers/phy/freescale/Kconfig | 9 +
> drivers/phy/freescale/Makefile | 1 +
> drivers/phy/freescale/phy-fsl-imx8m-pcie.c | 237 +++++++++++++++++++++
> 3 files changed, 247 insertions(+)
> create mode 100644 drivers/phy/freescale/phy-fsl-imx8m-pcie.c
>
> diff --git a/drivers/phy/freescale/Kconfig b/drivers/phy/freescale/Kconfig
> index 320630ffe3cd..e821498b1f7f 100644
> --- a/drivers/phy/freescale/Kconfig
> +++ b/drivers/phy/freescale/Kconfig
> @@ -14,3 +14,12 @@ config PHY_MIXEL_MIPI_DPHY
> help
> Enable this to add support for the Mixel DSI PHY as found
> on NXP's i.MX8 family of SOCs.
> +
> +config PHY_FSL_IMX8M_PCIE
> + tristate "Freescale i.MX8M PCIE PHY"
> + depends on OF && HAS_IOMEM
> + select GENERIC_PHY
> + default ARCH_MXC && ARM64

Why should this be default ? We dont do that for new drivers.. You may
add this to respective config file though...

> +static int imx8_pcie_phy_init(struct phy *phy)
> +{
> + int ret;
> + u32 val, pad_mode;
> + struct imx8_pcie_phy *imx8_phy = phy_get_drvdata(phy);
> +
> + reset_control_assert(imx8_phy->reset);
> +
> + pad_mode = imx8_phy->refclk_pad_mode;
> + /* Set AUX_EN_OVERRIDE 1'b0, when the CLKREQ# isn't hooked */
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_AUX_EN_OVERRIDE,
> + imx8_phy->clkreq_unused ?
> + 0 : IMX8MM_GPR_PCIE_AUX_EN_OVERRIDE);
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_AUX_EN,
> + IMX8MM_GPR_PCIE_AUX_EN);
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_POWER_OFF, 0);
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_SSC_EN, 0);
> +
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_REF_CLK_SEL,
> + pad_mode == IMX8_PCIE_REFCLK_PAD_INPUT ?
> + IMX8MM_GPR_PCIE_REF_CLK_EXT :
> + IMX8MM_GPR_PCIE_REF_CLK_PLL);
> + usleep_range(100, 200);
> +
> + /* Do the PHY common block reset */
> + regmap_update_bits(imx8_phy->iomuxc_gpr, IOMUXC_GPR14,
> + IMX8MM_GPR_PCIE_CMN_RST,
> + IMX8MM_GPR_PCIE_CMN_RST);
> + usleep_range(200, 500);
> +
> +

No multi blank line please

> +static struct platform_driver imx8_pcie_phy_driver = {
> + .probe = imx8_pcie_phy_probe,
> + .driver = {
> + .name = "imx8-pcie-phy",
> + .of_match_table = imx8_pcie_phy_of_match,
> + }
> +};
> +module_platform_driver(imx8_pcie_phy_driver);
> +
> +MODULE_DESCRIPTION("FSL IMX8 PCIE PHY driver");
> +MODULE_LICENSE("GPL");

This does not match the SPDX tag you have given

--
~Vinod