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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH] memory: tegra: Add dummy implementation on Tegra194 Content-Language: en-US To: Thierry Reding CC: Krzysztof Kozlowski , Jon Hunter , , References: <20230629160132.768940-1-thierry.reding@gmail.com> From: Sumit Gupta In-Reply-To: <20230629160132.768940-1-thierry.reding@gmail.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.126.231.35] X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail202.nvidia.com (10.129.68.7) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT054:EE_|SJ0PR12MB7065:EE_ X-MS-Office365-Filtering-Correlation-Id: 69b3131b-7fb6-412d-4ef3-08db7e565437 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(346002)(136003)(376002)(39860400002)(396003)(451199021)(46966006)(40470700004)(36840700001)(4744005)(41300700001)(2906002)(5660300002)(40460700003)(8676002)(8936002)(36756003)(82310400005)(31696002)(40480700001)(86362001)(426003)(31686004)(186003)(2616005)(6666004)(478600001)(336012)(16526019)(54906003)(53546011)(26005)(82740400003)(6916009)(70586007)(70206006)(4326008)(36860700001)(83380400001)(356005)(316002)(7636003)(16576012)(47076005)(43740500002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jul 2023 19:22:24.6224 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 69b3131b-7fb6-412d-4ef3-08db7e565437 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT054.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB7065 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/06/23 21:31, Thierry Reding wrote: > External email: Use caution opening links or attachments > > > From: Thierry Reding > > With the introduction of commit 9365bf006f53 ("PCI: tegra194: Add > interconnect support in Tegra234"), the PCI driver on Tegra194 and later > requires an interconnect provider. However, a provider is currently only > exposed on Tegra234 and this causes PCI on Tegra194 to defer probe > indefinitely. > > Fix this by adding a dummy implementation on Tegra194. This allows nodes > to be provided to interconnect consumers, but doesn't do any bandwidth > accounting or frequency scaling. > > Fixes: 9365bf006f53 ("PCI: tegra194: Add interconnect support in Tegra234") > Reported-by: Jon Hunter > Signed-off-by: Thierry Reding > --- Reviewed-by: Sumit Gupta Tested-by: Sumit Gupta Thank you, Sumit Gupta