memory: tegra: Add Tegra264 MC and EMC support

Add support to enable Memory Controller (MC) and External Memory
Controller (EMC) drivers for Tegra264. The nodes for MC and EMC are
mostly the same as Tegra234 but differ in number of channels and
interrupt numbers.

The patch also adds the bandwidth manager definitions required for
Tegra264 and uses them to populate the memory client table. All of
these are needed to properly enable memory interconnect (ICC) support.

Signed-off-by: Sumit Gupta <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Thierry Reding <[email protected]>

Author: Sumit Gupta

drivers/memory/tegra/Makefile

@@ -10,6 +10,7 @@ tegra-mc-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra186.o tegra194.o
 tegra-mc-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra186.o tegra234.o
+tegra-mc-$(CONFIG_ARCH_TEGRA_264_SOC) += tegra186.o tegra264.o
 
 obj-$(CONFIG_TEGRA_MC) += tegra-mc.o
 
@@ -21,5 +22,6 @@ obj-$(CONFIG_TEGRA210_EMC) += tegra210-emc.o
 obj-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-emc.o
 obj-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra186-emc.o
 obj-$(CONFIG_ARCH_TEGRA_234_SOC) += tegra186-emc.o
+obj-$(CONFIG_ARCH_TEGRA_264_SOC) += tegra186-emc.o
 
 tegra210-emc-y := tegra210-emc-core.o tegra210-emc-cc-r21021.o

drivers/memory/tegra/mc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2014 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2014-2025 NVIDIA CORPORATION.  All rights reserved.
  */
 
 #include <linux/clk.h>
@@ -48,6 +48,9 @@ static const struct of_device_id tegra_mc_of_match[] = {
 #endif
 #ifdef CONFIG_ARCH_TEGRA_234_SOC
 	{ .compatible = "nvidia,tegra234-mc", .data = &tegra234_mc_soc },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_264_SOC
+	{ .compatible = "nvidia,tegra264-mc", .data = &tegra264_mc_soc },
 #endif
 	{ /* sentinel */ }
 };

drivers/memory/tegra/mc.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (C) 2014 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2014-2025 NVIDIA CORPORATION.  All rights reserved.
  */
 
 #ifndef MEMORY_TEGRA_MC_H
@@ -182,6 +182,10 @@ extern const struct tegra_mc_soc tegra194_mc_soc;
 extern const struct tegra_mc_soc tegra234_mc_soc;
 #endif
 
+#ifdef CONFIG_ARCH_TEGRA_264_SOC
+extern const struct tegra_mc_soc tegra264_mc_soc;
+#endif
+
 #if defined(CONFIG_ARCH_TEGRA_3x_SOC) || \
     defined(CONFIG_ARCH_TEGRA_114_SOC) || \
     defined(CONFIG_ARCH_TEGRA_124_SOC) || \
@@ -193,7 +197,8 @@ extern const struct tegra_mc_ops tegra30_mc_ops;
 
 #if defined(CONFIG_ARCH_TEGRA_186_SOC) || \
     defined(CONFIG_ARCH_TEGRA_194_SOC) || \
-    defined(CONFIG_ARCH_TEGRA_234_SOC)
+    defined(CONFIG_ARCH_TEGRA_234_SOC) || \
+    defined(CONFIG_ARCH_TEGRA_264_SOC)
 extern const struct tegra_mc_ops tegra186_mc_ops;
 #endif
 

drivers/memory/tegra/tegra186-emc.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2019 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2019-2025 NVIDIA CORPORATION.  All rights reserved.
  */
 
 #include <linux/clk.h>
@@ -393,6 +393,9 @@ static const struct of_device_id tegra186_emc_of_match[] = {
 #endif
 #if defined(CONFIG_ARCH_TEGRA_234_SOC)
 	{ .compatible = "nvidia,tegra234-emc" },
+#endif
+#if defined(CONFIG_ARCH_TEGRA_264_SOC)
+	{ .compatible = "nvidia,tegra264-emc" },
 #endif
 	{ /* sentinel */ }
 };

drivers/memory/tegra/tegra186.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2017-2021 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2017-2025 NVIDIA CORPORATION.  All rights reserved.
  */
 
 #include <linux/io.h>
@@ -26,11 +26,24 @@
 static int tegra186_mc_probe(struct tegra_mc *mc)
 {
 	struct platform_device *pdev = to_platform_device(mc->dev);
+	struct resource *res;
 	unsigned int i;
 	char name[8];
 	int err;
 
-	mc->bcast_ch_regs = devm_platform_ioremap_resource_byname(pdev, "broadcast");
+	/*
+	 * From Tegra264, the SID region is not present in MC node and BROADCAST is first.
+	 * The common function 'tegra_mc_probe()' already maps first region entry from DT.
+	 * Check if the SID region is present in DT then map BROADCAST. Otherwise, consider
+	 * the first entry mapped in mc probe as the BROADCAST region. This is done to avoid
+	 * mapping the region twice when SID is not present and keep backward compatibility.
+	 */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sid");
+	if (res)
+		mc->bcast_ch_regs = devm_platform_ioremap_resource_byname(pdev, "broadcast");
+	else
+		mc->bcast_ch_regs = mc->regs;
+
 	if (IS_ERR(mc->bcast_ch_regs)) {
 		if (PTR_ERR(mc->bcast_ch_regs) == -EINVAL) {
 			dev_warn(&pdev->dev,

drivers/memory/tegra/tegra264-bwmgr.h

@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (C) 2025 NVIDIA CORPORATION.  All rights reserved. */
+
+#ifndef MEMORY_TEGRA_TEGRA264_BWMGR_H
+#define MEMORY_TEGRA_TEGRA264_BWMGR_H
+
+#define TEGRA264_BWMGR_ICC_PRIMARY	1
+#define TEGRA264_BWMGR_DEBUG		2
+#define TEGRA264_BWMGR_CPU_CLUSTER0	3
+#define TEGRA264_BWMGR_CPU_CLUSTER1	4
+#define TEGRA264_BWMGR_CPU_CLUSTER2	5
+#define TEGRA264_BWMGR_CPU_CLUSTER3	6
+#define TEGRA264_BWMGR_CPU_CLUSTER4	7
+#define TEGRA264_BWMGR_CPU_CLUSTER5	8
+#define TEGRA264_BWMGR_CPU_CLUSTER6	9
+#define TEGRA264_BWMGR_CACTMON		10
+#define TEGRA264_BWMGR_DISPLAY		11
+#define TEGRA264_BWMGR_VI		12
+#define TEGRA264_BWMGR_APE		13
+#define TEGRA264_BWMGR_VIFAL		14
+#define TEGRA264_BWMGR_GPU		15
+#define TEGRA264_BWMGR_EQOS		16
+#define TEGRA264_BWMGR_PCIE_0		17
+#define TEGRA264_BWMGR_PCIE_1		18
+#define TEGRA264_BWMGR_PCIE_2		19
+#define TEGRA264_BWMGR_PCIE_3		20
+#define TEGRA264_BWMGR_PCIE_4		21
+#define TEGRA264_BWMGR_PCIE_5		22
+#define TEGRA264_BWMGR_SDMMC_1		23
+#define TEGRA264_BWMGR_SDMMC_2		24
+#define TEGRA264_BWMGR_NVDEC		25
+#define TEGRA264_BWMGR_NVENC		26
+#define TEGRA264_BWMGR_NVJPG_0		27
+#define TEGRA264_BWMGR_NVJPG_1		28
+#define TEGRA264_BWMGR_OFAA		29
+#define TEGRA264_BWMGR_XUSB_HOST	30
+#define TEGRA264_BWMGR_XUSB_DEV		31
+#define TEGRA264_BWMGR_TSEC		32
+#define TEGRA264_BWMGR_VIC		33
+#define TEGRA264_BWMGR_APEDMA		34
+#define TEGRA264_BWMGR_SE		35
+#define TEGRA264_BWMGR_ISP		36
+#define TEGRA264_BWMGR_HDA		37
+#define TEGRA264_BWMGR_VI2FAL		38
+#define TEGRA264_BWMGR_VI2		39
+#define TEGRA264_BWMGR_RCE		40
+#define TEGRA264_BWMGR_PVA		41
+#define TEGRA264_BWMGR_NVPMODEL		42
+
+#endif