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High level sequence is to: - Check for the PM dynamic configuration support, if no error proceed with GEM dynamic configurations(next steps) otherwise skip the dynamic configuration. - Configure GEM Fixed configurations. - Configure GEM_CLK_CTRL (gemX_sgmii_mode). - Trigger GEM reset. Signed-off-by: Radhey Shyam Pandey Tested-by: Conor Dooley Reviewed-by: Andrew Lunn --- drivers/net/ethernet/cadence/macb_main.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 7eb7822cd184..97f77fa9e165 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "macb.h" /* This structure is only used for MACB on SiFive FU540 devices */ @@ -4621,6 +4622,25 @@ static int init_reset_optional(struct platform_device *pdev) "failed to init SGMII PHY\n"); } + ret = zynqmp_pm_is_function_supported(PM_IOCTL, IOCTL_SET_GEM_CONFIG); + if (!ret) { + u32 pm_info[2]; + + ret = of_property_read_u32_array(pdev->dev.of_node, "power-domains", + pm_info, ARRAY_SIZE(pm_info)); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to read power management information\n"); + return ret; + } + ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_FIXED, 0); + if (ret < 0) + return ret; + + ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1); + if (ret < 0) + return ret; + } + /* Fully reset controller at hardware level if mapped in device tree */ ret = device_reset_optional(&pdev->dev); if (ret) {