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Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , Nishanth Menon , Vignesh Raghavendra , Tero Kristo CC: Keerthy , Linux PM , Device Trees , LKML , LKML ARM , Bryan Brattlof , Krzysztof Kozlowski Subject: [PATCH v3 05/11] dt-bindings: thermal: k3-j72xx: elaborate on binding description Date: Mon, 31 Oct 2022 18:26:56 -0500 Message-ID: <20221031232702.10339-6-bb@ti.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221031232702.10339-1-bb@ti.com> References: <20221031232702.10339-1-bb@ti.com> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1908; h=from:subject; bh=2owYngSVCIIHuMuf97DPY5J6wC+TRH6miDqFBbdv1FU=; b=owNCWmg5MUFZJlNZZSwGGwAAZH///r5tYyl/v/rPy3X3/6fet//2f35uO86z7r376nf/9dewARsZ SHpNBiAaMgA0GTIDQA00DJoDEeo0MgAAAABoaNGQA0ABoD1NNDJsmjSMg5AGg0BoNAAyNAGgADINNA GmmQNDR6QGnpBoNAYho0GammQaaGgYmnpNA0YaiGjamgxNGjTI0DQNNGRo0MQA0aaNMEGTEBkGgaAD JkAGQZDRoDIYQMI0AAAA3YToNBFAENlBuOmEkI+Cl5+FCCQ79ze3SCoMcMUGuTXYC1XJDa9JaImPrk mvlmHSAL6gFssU5EPur/VQV1gfRVq4s2pdD1KIvOx6C5slSxjJsmLAYoPbwafvuyZ8scw8ZuUG7e0r dylbcDnGEAEYXUzbjNNEooJnG67sXRphSHkQb6ciRGJA2qJJ2jdLM3LRKQMo2g/nZtHq1QsAShA5xU q04bJTh4cJILlrEJw1BJ8scyDJPvSOfdXrbt+2/4p0Pg8jLT1a/QhqZwzvox38gsEyu0wAKAzofaQI ZmuzhUDvlVJ42N8Nl2CbQ8ouyNzsYMcr8GZzAKHO+WJivjU6wvGSbeYCAgebQP9DAB1hBjtE1P8AQu XWiGADJ1vRiG02dgfvzV/yyDs/awvbdW5Kz7o05EgpSVAmC2wL4S7g0JtE/5WF/i7kinChIMpYDDY= X-Developer-Key: i=bb@ti.com; a=openpgp; fpr=D3D177E40A38DF4D1853FEEF41B90D5D71D56CE0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Elaborate on the function of this device node as well as some of the properties this node uses. Signed-off-by: Bryan Brattlof Acked-by: Krzysztof Kozlowski --- .../bindings/thermal/ti,j72xx-thermal.yaml | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml index c74f124ebfc00..3bb870a26872f 100644 --- a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml @@ -9,6 +9,19 @@ title: Texas Instruments J72XX VTM (DTS) binding maintainers: - Keerthy +description: | + The TI K3 family of SoCs typically have a Voltage & Thermal + Management (VTM) device to control up to 8 temperature diode + sensors to measure silicon junction temperatures from different + hotspots of the chip as well as provide temperature, interrupt + and alerting information. + + The following polynomial equation can then be used to convert + value returned by this device into a temperature in Celsius + + Temp(C) = (-9.2627e-12) * x^4 + (6.0373e-08) * x^3 + \ + (-1.7058e-04) * x^2 + (3.2512e-01) * x + (-4.9003e+01) + properties: compatible: enum: @@ -19,7 +32,11 @@ properties: items: - description: VTM cfg1 register space - description: VTM cfg2 register space - - description: VTM efuse register space + - description: | + A software trimming method must be applied to some Jacinto + devices to function properly. This eFuse region provides + the information needed for these SoCs to report + temperatures accurately. power-domains: maxItems: 1