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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT025.mail.protection.outlook.com (10.13.177.136) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6156.16 via Frontend Transport; Mon, 27 Feb 2023 15:09:48 +0000 Received: from [10.254.241.51] (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Mon, 27 Feb 2023 09:09:45 -0600 Message-ID: <6e037df0-8f59-9277-3f40-c22278e02430@amd.com> Date: Mon, 27 Feb 2023 16:09:42 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH] mmc: sdhci-of-arasan: Add support to request the "gate" clock Content-Language: en-US To: Ulf Hansson , Swati Agarwal CC: , , , , , References: <20230223141402.23979-1-swati.agarwal@amd.com> From: Michal Simek In-Reply-To: Content-Type: text/plain; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2023 15:09:48.4489 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a597f54-a76a-4423-2ff3-08db18d4ab0d X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT025.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8063 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/27/23 15:56, Ulf Hansson wrote: > CAUTION: This message has originated from an External Source. Please use proper judgment and caution when opening attachments, clicking links, or responding to this email. > > > On Thu, 23 Feb 2023 at 15:14, Swati Agarwal wrote: >> >> Add support to read the optional "gate" clock property and request the >> clock which will be used to ungate the DLL clock. >> >> For Xilinx platforms which has DLL module, dll clock must be >> ungated/enabled when SD controller operates at higher frequencies like 50 >> MHz, 100 MHz and 200 MHz. This will be done by explicitly requesting gate >> clock from the driver. > > I guess we need to update the DT bindings too? DT binding has it already. It is just not used. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/mmc/arasan,sdhci.yaml?h=v6.2#n110 Thanks, Michal