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<8e873293-0f56-4ec9-a469-ea5d0fddebd2@nvidia.com> Date: Wed, 29 Apr 2026 10:27:28 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V2 1/2] dt-bindings: memory: tegra: Add nvidia,tegra238-mc compatible To: Ashish Mhetre , krzk@kernel.org, robh@kernel.org, conor+dt@kernel.org, =thierry.reding@kernel.org, sumitg@nvidia.com Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org References: <20260427073419.567360-1-amhetre@nvidia.com> <20260427073419.567360-2-amhetre@nvidia.com> From: Jon Hunter Content-Language: en-US In-Reply-To: <20260427073419.567360-2-amhetre@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ2PR07CA0014.namprd07.prod.outlook.com (2603:10b6:a03:505::7) To LV5PR12MB9754.namprd12.prod.outlook.com (2603:10b6:408:305::12) Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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vLI/y7arLglFxEznBJy3U6+zRlkgGLeuZi61VunBThshRjgkrhQnXsdKBEuErFoLpX4C4KRj+Zcq7OFeAAOcBA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS5PPF5A66AFD1C On 27/04/2026 08:34, Ashish Mhetre wrote: > Document the device tree binding for the Tegra238 memory controller. > Tegra238 has 8 memory controller channels plus broadcast and stream-id > registers. > > Add the stream ID header (nvidia,tegra238-mc.h) defining ISO and NISO > stream IDs for SMMU configuration. > > Signed-off-by: Ashish Mhetre > --- > .../nvidia,tegra186-mc.yaml | 31 ++++++++ > .../dt-bindings/memory/nvidia,tegra238-mc.h | 74 +++++++++++++++++++ > 2 files changed, 105 insertions(+) > create mode 100644 include/dt-bindings/memory/nvidia,tegra238-mc.h > > diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml > index 7b03b589168b..6c374e2b1543 100644 > --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml > +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra186-mc.yaml > @@ -32,6 +32,7 @@ properties: > - nvidia,tegra186-mc > - nvidia,tegra194-mc > - nvidia,tegra234-mc > + - nvidia,tegra238-mc > - nvidia,tegra264-mc > > reg: > @@ -266,6 +267,36 @@ allOf: > > interrupt-names: false > > + - if: > + properties: > + compatible: > + const: nvidia,tegra238-mc > + then: > + properties: > + reg: > + minItems: 10 > + maxItems: 10 > + description: 9 memory controller channels and 1 for stream-id registers > + > + reg-names: > + items: > + - const: sid > + - const: broadcast > + - const: ch0 > + - const: ch1 > + - const: ch2 > + - const: ch3 > + - const: ch4 > + - const: ch5 > + - const: ch6 > + - const: ch7 > + > + interrupts: > + items: > + - description: MC general interrupt > + > + interrupt-names: false > + > - if: > properties: > compatible: > diff --git a/include/dt-bindings/memory/nvidia,tegra238-mc.h b/include/dt-bindings/memory/nvidia,tegra238-mc.h > new file mode 100644 > index 000000000000..be24c0eb3f15 > --- /dev/null > +++ b/include/dt-bindings/memory/nvidia,tegra238-mc.h > @@ -0,0 +1,74 @@ > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > +/* Copyright (c) 2026, NVIDIA CORPORATION. All rights reserved. */ > + > +#ifndef DT_BINDINGS_MEMORY_TEGRA238_MC_H > +#define DT_BINDINGS_MEMORY_TEGRA238_MC_H > + > +/* special clients */ > +#define TEGRA238_SID_INVALID 0x0 > +#define TEGRA238_SID_PASSTHROUGH 0x7f > + > +/* ISO stream IDs */ > +#define TEGRA238_SID_ISO_NVDISPLAY 0x1 > +#define TEGRA238_SID_ISO_APE0 0x2 > +#define TEGRA238_SID_ISO_APE1 0x3 > + > +/* NISO stream IDs */ > +#define TEGRA238_SID_AON 0x1 > +#define TEGRA238_SID_BPMP 0x2 > +#define TEGRA238_SID_ETR 0x3 > +#define TEGRA238_SID_FDE 0x4 > +#define TEGRA238_SID_HC 0x5 > +#define TEGRA238_SID_HDA 0x6 > +#define TEGRA238_SID_NVDEC 0x7 > +#define TEGRA238_SID_NVDISPLAY 0x8 > +#define TEGRA238_SID_NVENC 0x9 > +#define TEGRA238_SID_OFA 0xa > +#define TEGRA238_SID_PCIE0 0xb > +#define TEGRA238_SID_PCIE1 0xc > +#define TEGRA238_SID_PCIE2 0xd > +#define TEGRA238_SID_PCIE3 0xe > +#define TEGRA238_SID_HWMP_PMA 0xf > +#define TEGRA238_SID_PSC 0x10 > +#define TEGRA238_SID_SDMMC1A 0x11 > +#define TEGRA238_SID_SDMMC4A 0x12 > +#define TEGRA238_SID_SES_SE0 0x13 > +#define TEGRA238_SID_SES_SE1 0x14 > +#define TEGRA238_SID_SES_SE2 0x15 > +#define TEGRA238_SID_SEU1_SE0 0x16 > +#define TEGRA238_SID_SEU1_SE1 0x17 > +#define TEGRA238_SID_SEU1_SE2 0x18 > +#define TEGRA238_SID_TSEC 0x19 > +#define TEGRA238_SID_UFSHC 0x1a > +#define TEGRA238_SID_VIC 0x1b > +#define TEGRA238_SID_XUSB_HOST 0x1c > +#define TEGRA238_SID_XUSB_DEV 0x1d > +#define TEGRA238_SID_GPCDMA_0 0x1e > +#define TEGRA238_SID_SMMU_TEST 0x1f > + > +/* Host1x virtualization clients. */ > +#define TEGRA238_SID_HOST1X_CTX0 0x20 > +#define TEGRA238_SID_HOST1X_CTX1 0x21 > +#define TEGRA238_SID_HOST1X_CTX2 0x22 > +#define TEGRA238_SID_HOST1X_CTX3 0x23 > +#define TEGRA238_SID_HOST1X_CTX4 0x24 > +#define TEGRA238_SID_HOST1X_CTX5 0x25 > +#define TEGRA238_SID_HOST1X_CTX6 0x26 > +#define TEGRA238_SID_HOST1X_CTX7 0x27 > + > +#define TEGRA238_SID_XUSB_VF0 0x28 > +#define TEGRA238_SID_XUSB_VF1 0x29 > +#define TEGRA238_SID_XUSB_VF2 0x2a > +#define TEGRA238_SID_XUSB_VF3 0x2b > + > +/* Host1x command buffers */ > +#define TEGRA238_SID_HC_VM0 0x2c > +#define TEGRA238_SID_HC_VM1 0x2d > +#define TEGRA238_SID_HC_VM2 0x2e > +#define TEGRA238_SID_HC_VM3 0x2f > +#define TEGRA238_SID_HC_VM4 0x30 > +#define TEGRA238_SID_HC_VM5 0x31 > +#define TEGRA238_SID_HC_VM6 0x32 > +#define TEGRA238_SID_HC_VM7 0x33 > + > +#endif Reviewed-by: Jon Hunter Thanks! Jon -- nvpublic