[PATCH v3 1/3] clk: imx8mm: Add support for PCIe clocks

[Sumit Garg]

Hi Tim,

On Fri, 19 Apr 2024 at 08:29, Tim Harvey <tharvey at gateworks.com> wrote:
>
> Add support for PCIe clocks required to enable PCIe support on
> iMX8MM SoC.
>
> Signed-off-by: Tim Harvey <tharvey at gateworks.com>
> ---
> v3: wrap pcie clk config around IS_ENABLED to avoid SPL growth as
>     suggested by Marek
> ---
>  drivers/clk/imx/clk-imx8mm.c | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>

Although I was at EOSS last week, it is really nice to see more iMX
SoCs adopting the modern PCIe DW iMX driver.

-Sumit

> diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c
> index b5c253e49663..1a00dd1d287b 100644
> --- a/drivers/clk/imx/clk-imx8mm.c
> +++ b/drivers/clk/imx/clk-imx8mm.c
> @@ -66,6 +66,17 @@ static const char *imx8mm_i2c3_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_
>  static const char *imx8mm_i2c4_sels[] = {"clock-osc-24m", "sys_pll1_160m", "sys_pll2_50m", "sys_pll3_out", "audio_pll1_out",
>                                          "video_pll1_out", "audio_pll2_out", "sys_pll1_133m", };
>
> +#if CONFIG_IS_ENABLED(PCIE_DW_IMX)
> +static const char *imx8mm_pcie1_ctrl_sels[] = {"clock-osc-24m", "sys_pll2_250m", "sys_pll2_200m", "sys_pll1_266m",
> +                                              "sys_pll1_800m", "sys_pll2_500m", "sys_pll2_333m", "sys_pll3_out", };
> +
> +static const char *imx8mm_pcie1_phy_sels[] = {"clock-osc-24m", "sys_pll2_100m", "sys_pll2_500m", "clk_ext1", "clk_ext2",
> +                                             "clk_ext3", "clk_ext4", "sys_pll1_400m", };
> +
> +static const char *imx8mm_pcie1_aux_sels[] = {"clock-osc-24m", "sys_pll2_200m", "sys_pll2_50m", "sys_pll3_out",
> +                                             "sys_pll2_100m", "sys_pll1_80m", "sys_pll1_160m", "sys_pll1_200m", };
> +#endif
> +
>  #ifndef CONFIG_SPL_BUILD
>  static const char *imx8mm_pwm1_sels[] = {"clock-osc-24m", "sys_pll2_100m", "sys_pll1_160m", "sys_pll1_40m",
>                                          "sys_pll3_out", "clk_ext1", "sys_pll1_80m", "video_pll1_out", };
> @@ -256,6 +267,17 @@ static int imx8mm_clk_probe(struct udevice *dev)
>                 imx8m_clk_composite("usb_bus", imx8mm_usb_bus_sels, base + 0x8b80));
>
>         /* IP */
> +#if CONFIG_IS_ENABLED(PCIE_DW_IMX)
> +       clk_dm(IMX8MM_CLK_PCIE1_CTRL,
> +              imx8m_clk_composite("pcie1_ctrl", imx8mm_pcie1_ctrl_sels,
> +                                  base + 0xa300));
> +       clk_dm(IMX8MM_CLK_PCIE1_PHY,
> +              imx8m_clk_composite("pcie1_phy", imx8mm_pcie1_phy_sels,
> +                                  base + 0xa380));
> +       clk_dm(IMX8MM_CLK_PCIE1_AUX,
> +              imx8m_clk_composite("pcie1_aux", imx8mm_pcie1_aux_sels,
> +                                  base + 0xa400));
> +#endif
>         clk_dm(IMX8MM_CLK_USDHC1,
>                imx8m_clk_composite("usdhc1", imx8mm_usdhc1_sels,
>                                    base + 0xac00));
> @@ -339,6 +361,11 @@ static int imx8mm_clk_probe(struct udevice *dev)
>                imx_clk_gate4("pwm4_root_clk", "pwm4", base + 0x42b0, 0));
>  #endif
>
> +#if CONFIG_IS_ENABLED(PCIE_DW_IMX)
> +       clk_dm(IMX8MM_CLK_PCIE1_ROOT,
> +              imx_clk_gate4("pcie1_root_clk", "pcie1_ctrl", base + 0x4250, 0));
> +#endif
> +
>  #if CONFIG_IS_ENABLED(DM_SPI)
>         clk_dm(IMX8MM_CLK_ECSPI1,
>                imx8m_clk_composite("ecspi1", imx8mm_ecspi1_sels, base + 0xb280));
> --
> 2.25.1
>