linux-kernel - [PATCH] drivers: remoteproc: xlnx: Add Versal and Versal-NET support

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Message-ID: <20240418220125.744322-1-tanmay.shah@amd.com>
Date: Thu, 18 Apr 2024 15:01:25 -0700
From: Tanmay Shah <tanmay.shah@....com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>
CC: <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Tanmay
 Shah <tanmay.shah@....com>
Subject: [PATCH] drivers: remoteproc: xlnx: Add Versal and Versal-NET support

AMD-Xilinx Versal platform is successor of ZynqMP platform.
Real-time Processing Unit R5 cluster IP on Versal is same as
of ZynqMP Platform. Power-domains ids for Versal platform is
different than ZynqMP.

AMD-Xilinx Versal-NET platform is successor of Versal platform.
Versal-NET Real-Time Processing Unit has two clusters and each
cluster contains dual core ARM Cortex-R52 processors. Each R52
core is assigned 128KB of TCM memory.

Signed-off-by: Tanmay Shah <tanmay.shah@....com>
---
 drivers/remoteproc/xlnx_r5_remoteproc.c | 53 ++++++++-----------------
 1 file changed, 17 insertions(+), 36 deletions(-)

diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c
index 7b1c12108bff..a6d8ac7394e7 100644
--- a/drivers/remoteproc/xlnx_r5_remoteproc.c
+++ b/drivers/remoteproc/xlnx_r5_remoteproc.c
@@ -300,36 +300,6 @@ static void zynqmp_r5_rproc_kick(struct rproc *rproc, int vqid)
 		dev_warn(dev, "failed to send message\n");
 }
 
-/*
- * zynqmp_r5_set_mode()
- *
- * set RPU cluster and TCM operation mode
- *
- * @r5_core: pointer to zynqmp_r5_core type object
- * @fw_reg_val: value expected by firmware to configure RPU cluster mode
- * @tcm_mode: value expected by fw to configure TCM mode (lockstep or split)
- *
- * Return: 0 for success and < 0 for failure
- */
-static int zynqmp_r5_set_mode(struct zynqmp_r5_core *r5_core,
-			      enum rpu_oper_mode fw_reg_val,
-			      enum rpu_tcm_comb tcm_mode)
-{
-	int ret;
-
-	ret = zynqmp_pm_set_rpu_mode(r5_core->pm_domain_id, fw_reg_val);
-	if (ret < 0) {
-		dev_err(r5_core->dev, "failed to set RPU mode\n");
-		return ret;
-	}
-
-	ret = zynqmp_pm_set_tcm_config(r5_core->pm_domain_id, tcm_mode);
-	if (ret < 0)
-		dev_err(r5_core->dev, "failed to configure TCM\n");
-
-	return ret;
-}
-
 /*
  * zynqmp_r5_rproc_start()
  * @rproc: single R5 core's corresponding rproc instance
@@ -941,7 +911,7 @@ static int zynqmp_r5_core_init(struct zynqmp_r5_cluster *cluster,
 	/* Maintain backward compatibility for zynqmp by using hardcode TCM address. */
 	if (of_find_property(r5_core->np, "reg", NULL))
 		ret = zynqmp_r5_get_tcm_node_from_dt(cluster);
-	else
+	else if (device_is_compatible(dev, "xlnx,zynqmp-r5fss"))
 		ret = zynqmp_r5_get_tcm_node(cluster);
 
 	if (ret) {
@@ -960,12 +930,21 @@ static int zynqmp_r5_core_init(struct zynqmp_r5_cluster *cluster,
 			return ret;
 		}
 
-		ret = zynqmp_r5_set_mode(r5_core, fw_reg_val, tcm_mode);
-		if (ret) {
-			dev_err(dev, "failed to set r5 cluster mode %d, err %d\n",
-				cluster->mode, ret);
+		ret = zynqmp_pm_set_rpu_mode(r5_core->pm_domain_id, fw_reg_val);
+		if (ret < 0) {
+			dev_err(r5_core->dev, "failed to set RPU mode\n");
 			return ret;
 		}
+
+		if (of_find_property(dev_of_node(dev), "xlnx,tcm-mode", NULL) ||
+		    device_is_compatible(dev, "xlnx,zynqmp-r5fss")) {
+			ret = zynqmp_pm_set_tcm_config(r5_core->pm_domain_id,
+						       tcm_mode);
+			if (ret < 0) {
+				dev_err(r5_core->dev, "failed to configure TCM\n");
+				return ret;
+			}
+		}
 	}
 
 	return 0;
@@ -1022,7 +1001,7 @@ static int zynqmp_r5_cluster_init(struct zynqmp_r5_cluster *cluster)
 		ret = of_property_read_u32(dev_node, "xlnx,tcm-mode", (u32 *)&tcm_mode);
 		if (ret)
 			return ret;
-	} else {
+	} else if (device_is_compatible(dev, "xlnx,zynqmp-r5fss")) {
 		if (cluster_mode == LOCKSTEP_MODE)
 			tcm_mode = PM_RPU_TCM_COMB;
 		else
@@ -1212,6 +1191,8 @@ static int zynqmp_r5_remoteproc_probe(struct platform_device *pdev)
 
 /* Match table for OF platform binding */
 static const struct of_device_id zynqmp_r5_remoteproc_match[] = {
+	{ .compatible = "xlnx,versal-net-r52fss", },
+	{ .compatible = "xlnx,versal-r5fss", },
 	{ .compatible = "xlnx,zynqmp-r5fss", },
 	{ /* end of list */ },
 };

base-commit: 912ebe48bec5927e2049e91b0e8a9cc682a709d2
-- 
2.25.1