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Wed, 27 May 2026 12:55:45 -0500 From: Santhosh Kumar K To: , , , , , , , , , CC: , , , , , , , Subject: [PATCH v3 02/13] spi: dt-bindings: cdns,qspi-nor: add PHY tuning pattern partition property Date: Wed, 27 May 2026 23:25:16 +0530 Message-ID: <20260527175527.2247679-3-s-k6@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260527175527.2247679-1-s-k6@ti.com> References: <20260527175527.2247679-1-s-k6@ti.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF00012E61:EE_|EAYPR10MB997925:EE_ X-MS-Office365-Filtering-Correlation-Id: cf2edc95-9842-4bfa-e300-08debc193320 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|376014|7416014|82310400026|921020|56012099006|18002099003|22082099003|3023799007; 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When no partition is explicitly identified, the controller must search all available partitions to locate the pattern by label, which adds overhead and relies on label naming conventions outside the controller's control. Add cdns,phy-pattern-partition, a phandle property that allows the DT author to directly reference the flash partition holding the PHY tuning pattern. The controller uses this partition during calibration, avoiding the partition search entirely. Signed-off-by: Santhosh Kumar K --- .../bindings/spi/cdns,qspi-nor-peripheral-props.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml index 510b82c177c0..0ffcdf5b00d0 100644 --- a/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml +++ b/Documentation/devicetree/bindings/spi/cdns,qspi-nor-peripheral-props.yaml @@ -39,4 +39,12 @@ properties: Delay in nanoseconds between setting qspi_n_ss_out low and first bit transfer. + cdns,phy-pattern-partition: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the flash partition containing the PHY tuning pattern. + When present, the controller uses this partition to locate the + pattern data during PHY tuning instead of searching all partitions + by label. + additionalProperties: true -- 2.34.1