From: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
To: <michal.simek@xilinx.com>, <nicolas.ferre@microchip.com>,
<claudiu.beznea@microchip.com>, <davem@davemloft.net>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
<gregkh@linuxfoundation.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
<git@amd.com>, <git@xilinx.com>,
"Radhey Shyam Pandey" <radhey.shyam.pandey@amd.com>
Subject: [PATCH v2 net-next 2/2] net: macb: Add zynqmp SGMII dynamic configuration support
Date: Sat, 30 Jul 2022 01:05:50 +0530 [thread overview]
Message-ID: <1659123350-10638-3-git-send-email-radhey.shyam.pandey@amd.com> (raw)
In-Reply-To: <1659123350-10638-1-git-send-email-radhey.shyam.pandey@amd.com>
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)
---
Changes for v2:
- Add phy_exit() in error return paths.
---
drivers/net/ethernet/cadence/macb_main.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 4cd4f57ca2aa..517b40ff098b 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -38,6 +38,7 @@
#include <linux/pm_runtime.h>
#include <linux/ptp_classify.h>
#include <linux/reset.h>
+#include <linux/firmware/xlnx-zynqmp.h>
#include "macb.h"
/* This structure is only used for MACB on SiFive FU540 devices */
@@ -4621,6 +4622,30 @@ 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) {
+ phy_exit(bp->sgmii_phy);
+ 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) {
+ phy_exit(bp->sgmii_phy);
+ return ret;
+ }
+
+ ret = zynqmp_pm_set_gem_config(pm_info[1], GEM_CONFIG_SGMII_MODE, 1);
+ if (ret < 0) {
+ phy_exit(bp->sgmii_phy);
+ return ret;
+ }
+ }
+
/* Fully reset controller at hardware level if mapped in device tree */
ret = device_reset_optional(&pdev->dev);
if (ret) {
--
2.1.1
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next prev parent reply other threads:[~2022-07-29 19:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-29 19:35 [PATCH v2 net-next 0/2] macb: add zynqmp SGMII dynamic configuration support Radhey Shyam Pandey
2022-07-29 19:35 ` [PATCH v2 net-next 1/2] firmware: xilinx: add support for sd/gem config Radhey Shyam Pandey
2022-08-01 9:56 ` Claudiu.Beznea
2022-08-01 12:52 ` Pandey, Radhey Shyam
2022-08-01 15:06 ` Claudiu.Beznea
2022-08-01 18:50 ` Pandey, Radhey Shyam
2022-07-29 19:35 ` Radhey Shyam Pandey [this message]
2022-07-29 19:57 ` [PATCH v2 net-next 2/2] net: macb: Add zynqmp SGMII dynamic configuration support Conor.Dooley
2022-08-01 11:35 ` Claudiu.Beznea
2022-08-01 13:02 ` Pandey, Radhey Shyam
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