Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.118.233 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.118.233; helo=mail.nvidia.com; pr=C
From:   Vidya Sagar <vidyas@nvidia.com>
To:     <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
        <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
        <mperttunen@nvidia.com>
CC:     <devicetree@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <kthota@nvidia.com>,
        <mmaddireddy@nvidia.com>, <vidyas@nvidia.com>, <sagar.tv@gmail.com>
Subject: [PATCH V1 1/2] dt-bindings: PCI: tegra234: Add ECAM support
Date:   Thu, 27 Oct 2022 10:42:13 +0530
Message-ID: <20221027051214.22003-2-vidyas@nvidia.com>
In-Reply-To: <20221027051214.22003-1-vidyas@nvidia.com>
References: <20221027051214.22003-1-vidyas@nvidia.com>
MIME-Version: 1.0
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Oct 2022 05:12:32.0350
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: b2ed527f-44ca-4c7e-48dd-08dab7d9da1a
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT053.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4560
X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE
        autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add support for ECAM aperture for Tegra234.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
 .../devicetree/bindings/pci/nvidia,tegra194-pcie.yaml  | 10 ++++++++--
 .../devicetree/bindings/pci/snps,dw-pcie.yaml          |  2 +-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
index 75da3e8eecb9..15cc2d2055bb 100644
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.yaml
@@ -27,6 +27,7 @@ properties:
       - nvidia,tegra234-pcie
 
   reg:
+    minItems: 4
     items:
       - description: controller's application logic registers
       - description: configuration registers
@@ -35,13 +36,17 @@ properties:
           available for software access.
       - description: aperture where the Root Port's own configuration
           registers are available.
+      - description: aperture to access the configuration space through ECAM.
+          This is applicable only for Tegra234.
 
   reg-names:
+    minItems: 4
     items:
       - const: appl
       - const: config
       - const: atu_dma
       - const: dbi
+      - const: ecam
 
   interrupts:
     items:
@@ -305,8 +310,9 @@ examples:
             reg = <0x00 0x14160000 0x0 0x00020000>, /* appl registers (128K)      */
                   <0x00 0x36000000 0x0 0x00040000>, /* configuration space (256K) */
                   <0x00 0x36040000 0x0 0x00040000>, /* iATU_DMA reg space (256K)  */
-                  <0x00 0x36080000 0x0 0x00040000>; /* DBI reg space (256K)       */
-            reg-names = "appl", "config", "atu_dma", "dbi";
+                  <0x00 0x36080000 0x0 0x00040000>, /* DBI reg space (256K)       */
+                  <0x24 0x30000000 0x0 0x10000000>; /* ECAM (256MB)               */
+            reg-names = "appl", "config", "atu_dma", "dbi", "ecam";
 
             #address-cells = <3>;
             #size-cells = <2>;
diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
index 7287d395e1b6..7e0b015f1414 100644
--- a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
@@ -35,7 +35,7 @@ properties:
     maxItems: 5
     items:
       enum: [ dbi, dbi2, config, atu, atu_dma, app, appl, elbi, mgmt, ctrl,
-              parf, cfg, link, ulreg, smu, mpu, apb, phy ]
+              parf, cfg, link, ulreg, smu, mpu, apb, phy, ecam ]
 
   num-lanes:
     description: |
-- 
2.17.1