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net: macb: Add zynqmp SGMII dynamic configuration support
Add support for the dynamic configuration which takes care of configuring the GEM secure space configuration registers using EEMI APIs. 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 <radhey.shyam.pandey@amd.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Conor Dooley <conor.dooley@microchip.com> (for MPFS) Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -38,6 +38,7 @@
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#include <linux/pm_runtime.h>
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#include <linux/pm_runtime.h>
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#include <linux/ptp_classify.h>
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#include <linux/ptp_classify.h>
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#include <linux/reset.h>
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#include <linux/reset.h>
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#include <linux/firmware/xlnx-zynqmp.h>
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#include "macb.h"
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#include "macb.h"
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/* This structure is only used for MACB on SiFive FU540 devices */
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/* This structure is only used for MACB on SiFive FU540 devices */
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@ -4621,6 +4622,25 @@ static int init_reset_optional(struct platform_device *pdev)
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"failed to init SGMII PHY\n");
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"failed to init SGMII PHY\n");
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}
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}
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ret = zynqmp_pm_is_function_supported(PM_IOCTL, IOCTL_SET_GEM_CONFIG);
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if (!ret) {
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u32 pm_info[2];
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ret = of_property_read_u32_array(pdev->dev.of_node, "power-domains",
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pm_info, ARRAY_SIZE(pm_info));
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if (ret) {
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dev_err(&pdev->dev, "Failed to read power management information\n");
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goto err_out_phy_exit;
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}
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ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_FIXED, 0);
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if (ret)
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goto err_out_phy_exit;
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ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1);
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if (ret)
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goto err_out_phy_exit;
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}
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/* Fully reset controller at hardware level if mapped in device tree */
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/* Fully reset controller at hardware level if mapped in device tree */
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ret = device_reset_optional(&pdev->dev);
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ret = device_reset_optional(&pdev->dev);
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if (ret) {
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if (ret) {
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@ -4629,6 +4649,8 @@ static int init_reset_optional(struct platform_device *pdev)
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}
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}
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ret = macb_init(pdev);
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ret = macb_init(pdev);
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err_out_phy_exit:
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if (ret)
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if (ret)
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phy_exit(bp->sgmii_phy);
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phy_exit(bp->sgmii_phy);
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