[PATCH v3 1/5] dt-bindings: thermal: imx8mm-thermal: Document optional nvmem-cells

[PATCH v3 1/5] dt-bindings: thermal: imx8mm-thermal: Document optional nvmem-cells

[Marek Vasut]

The TMU TASR, TCALIVn, TRIM registers must be explicitly programmed with
calibration values from OCOTP. Document optional phandle to OCOTP nvmem
provider.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Adam Ford <aford173@gmail.com>
Cc: Alice Guo <alice.guo@nxp.com>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: devicetree@vger.kernel.org
To: linux-pm@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
---
V2: Add AB from Krzysztof
V3: No change
---
 .../devicetree/bindings/thermal/imx8mm-thermal.yaml        | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/thermal/imx8mm-thermal.yaml b/Documentation/devicetree/bindings/thermal/imx8mm-thermal.yaml
index 89c54e08ee61b..b90726229ac9c 100644
--- a/Documentation/devicetree/bindings/thermal/imx8mm-thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/imx8mm-thermal.yaml
@@ -32,6 +32,13 @@ properties:
   clocks:
     maxItems: 1
 
+  nvmem-cells:
+    maxItems: 1
+    description: Phandle to the calibration data provided by ocotp
+
+  nvmem-cell-names:
+    const: calib
+
   "#thermal-sensor-cells":
     description: |
       Number of cells required to uniquely identify the thermal
-- 
2.35.1


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[PATCH v3 2/5] arm64: dts: imx8m: Align SoC unique ID node unit address

[Marek Vasut]

Align the SoC unique ID DT node unit address with its reg property.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Fixes: cbff23797fa1 ("arm64: dts: imx8m: add NVMEM provider and consumer to read soc unique ID")
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Adam Ford <aford173@gmail.com>
Cc: Alice Guo <alice.guo@nxp.com>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: devicetree@vger.kernel.org
To: linux-pm@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
---
V2: Add RB from Peng
V3: No change
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 2 +-
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 2 +-
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +-
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 0c97aca8db6b6..423cb36cbcd53 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -563,7 +563,7 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mm_uid: unique-id@410 {
+				imx8mm_uid: unique-id@4 {
 					reg = <0x4 0x8>;
 				};
 
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 9b3a9e1384ae9..312e3abc35ea8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -564,7 +564,7 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mn_uid: unique-id@410 {
+				imx8mn_uid: unique-id@4 {
 					reg = <0x4 0x8>;
 				};
 
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index f18cf611f778e..c9459ed21b243 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -426,7 +426,7 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mp_uid: unique-id@420 {
+				imx8mp_uid: unique-id@8 {
 					reg = <0x8 0x8>;
 				};
 
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 5246b44a37d4a..2b6d3f4ff5d93 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -593,7 +593,7 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mq_uid: soc-uid@410 {
+				imx8mq_uid: soc-uid@4 {
 					reg = <0x4 0x8>;
 				};
 
-- 
2.35.1


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[PATCH v3 3/5] arm64: dts: imx8m: Document the fuse address calculation

[Marek Vasut]

The mapping from OCOTP reg DT property to Fusemap Descriptions Table in
the datasheet is often unclear. Add a comment to make it easier to find
out how it works. No functional change.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Adam Ford <aford173@gmail.com>
Cc: Alice Guo <alice.guo@nxp.com>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: devicetree@vger.kernel.org
To: linux-pm@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
---
V2: Add RB from Peng
V3: No change
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 19 ++++++++++++++++---
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 19 ++++++++++++++++---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 21 +++++++++++++++++----
 arch/arm64/boot/dts/freescale/imx8mq.dtsi | 19 ++++++++++++++++---
 4 files changed, 65 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 423cb36cbcd53..513c2de0caa15 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -563,15 +563,28 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mm_uid: unique-id@4 {
+				/*
+				 * The register address below maps to the MX8M
+				 * Fusemap Description Table entries this way.
+				 * Assuming
+				 *   reg = <ADDR SIZE>;
+				 * then
+				 *   Fuse Address = (ADDR * 4) + 0x400
+				 * Note that if SIZE is greater than 4, then
+				 * each subsequent fuse is located at offset
+				 * +0x10 in Fusemap Description Table (e.g.
+				 * reg = <0x4 0x8> describes fuses 0x410 and
+				 * 0x420).
+				 */
+				imx8mm_uid: unique-id@4 { /* 0x410-0x420 */
 					reg = <0x4 0x8>;
 				};
 
-				cpu_speed_grade: speed-grade@10 {
+				cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
-				fec_mac_address: mac-address@90 {
+				fec_mac_address: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
 			};
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 312e3abc35ea8..068f599cdf757 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -564,15 +564,28 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mn_uid: unique-id@4 {
+				/*
+				 * The register address below maps to the MX8M
+				 * Fusemap Description Table entries this way.
+				 * Assuming
+				 *   reg = <ADDR SIZE>;
+				 * then
+				 *   Fuse Address = (ADDR * 4) + 0x400
+				 * Note that if SIZE is greater than 4, then
+				 * each subsequent fuse is located at offset
+				 * +0x10 in Fusemap Description Table (e.g.
+				 * reg = <0x4 0x8> describes fuses 0x410 and
+				 * 0x420).
+				 */
+				imx8mn_uid: unique-id@4 { /* 0x410-0x420 */
 					reg = <0x4 0x8>;
 				};
 
-				cpu_speed_grade: speed-grade@10 {
+				cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
-				fec_mac_address: mac-address@90 {
+				fec_mac_address: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
 			};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index c9459ed21b243..ddcd5e23ba47d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -426,19 +426,32 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mp_uid: unique-id@8 {
+				/*
+				 * The register address below maps to the MX8M
+				 * Fusemap Description Table entries this way.
+				 * Assuming
+				 *   reg = <ADDR SIZE>;
+				 * then
+				 *   Fuse Address = (ADDR * 4) + 0x400
+				 * Note that if SIZE is greater than 4, then
+				 * each subsequent fuse is located at offset
+				 * +0x10 in Fusemap Description Table (e.g.
+				 * reg = <0x8 0x8> describes fuses 0x420 and
+				 * 0x430).
+				 */
+				imx8mp_uid: unique-id@8 { /* 0x420-0x430 */
 					reg = <0x8 0x8>;
 				};
 
-				cpu_speed_grade: speed-grade@10 {
+				cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
-				eth_mac1: mac-address@90 {
+				eth_mac1: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
 
-				eth_mac2: mac-address@96 {
+				eth_mac2: mac-address@96 { /* 0x658 */
 					reg = <0x96 6>;
 				};
 			};
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 2b6d3f4ff5d93..8a2ec90b493d9 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -593,15 +593,28 @@ ocotp: efuse@30350000 {
 				#address-cells = <1>;
 				#size-cells = <1>;
 
-				imx8mq_uid: soc-uid@4 {
+				/*
+				 * The register address below maps to the MX8M
+				 * Fusemap Description Table entries this way.
+				 * Assuming
+				 *   reg = <ADDR SIZE>;
+				 * then
+				 *   Fuse Address = (ADDR * 4) + 0x400
+				 * Note that if SIZE is greater than 4, then
+				 * each subsequent fuse is located at offset
+				 * +0x10 in Fusemap Description Table (e.g.
+				 * reg = <0x4 0x8> describes fuses 0x410 and
+				 * 0x420).
+				 */
+				imx8mq_uid: soc-uid@4 { /* 0x410-0x420 */
 					reg = <0x4 0x8>;
 				};
 
-				cpu_speed_grade: speed-grade@10 {
+				cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
-				fec_mac_address: mac-address@90 {
+				fec_mac_address: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
 			};
-- 
2.35.1


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[PATCH v3 4/5] arm64: dts: imx8m: Add TMU phandle to calibration data in OCOTP

[Marek Vasut]

The TMU TASR, TCALIVn, TRIM registers must be explicitly programmed with
calibration values in OCOTP. Add the OCOTP calibration values phandle so
the TMU driver can perform this programming.

The MX8MM/MX8MN TMUv1 uses only one OCOTP cell, while MX8MP TMUv2 uses 4.

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Adam Ford <aford173@gmail.com>
Cc: Alice Guo <alice.guo@nxp.com>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: devicetree@vger.kernel.org
To: linux-pm@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
---
V2: Add RB from Peng
V3: No change
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 6 ++++++
 arch/arm64/boot/dts/freescale/imx8mn.dtsi | 6 ++++++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index 513c2de0caa15..0cd7fff47c44d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -496,6 +496,8 @@ tmu: tmu@30260000 {
 				compatible = "fsl,imx8mm-tmu";
 				reg = <0x30260000 0x10000>;
 				clocks = <&clk IMX8MM_CLK_TMU_ROOT>;
+				nvmem-cells = <&tmu_calib>;
+				nvmem-cell-names = "calib";
 				#thermal-sensor-cells = <0>;
 			};
 
@@ -584,6 +586,10 @@ cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
+				tmu_calib: calib@3c { /* 0x4f0 */
+					reg = <0x3c 4>;
+				};
+
 				fec_mac_address: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 068f599cdf757..5eef9b274edde 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -498,6 +498,8 @@ tmu: tmu@30260000 {
 				compatible = "fsl,imx8mn-tmu", "fsl,imx8mm-tmu";
 				reg = <0x30260000 0x10000>;
 				clocks = <&clk IMX8MN_CLK_TMU_ROOT>;
+				nvmem-cells = <&tmu_calib>;
+				nvmem-cell-names = "calib";
 				#thermal-sensor-cells = <0>;
 			};
 
@@ -585,6 +587,10 @@ cpu_speed_grade: speed-grade@10 { /* 0x440 */
 					reg = <0x10 4>;
 				};
 
+				tmu_calib: calib@3c { /* 0x4f0 */
+					reg = <0x3c 4>;
+				};
+
 				fec_mac_address: mac-address@90 { /* 0x640 */
 					reg = <0x90 6>;
 				};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index ddcd5e23ba47d..0173e394ad4d8 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -380,6 +380,8 @@ tmu: tmu@30260000 {
 				compatible = "fsl,imx8mp-tmu";
 				reg = <0x30260000 0x10000>;
 				clocks = <&clk IMX8MP_CLK_TSENSOR_ROOT>;
+				nvmem-cells = <&tmu_calib>;
+				nvmem-cell-names = "calib";
 				#thermal-sensor-cells = <1>;
 			};
 
@@ -454,6 +456,10 @@ eth_mac1: mac-address@90 { /* 0x640 */
 				eth_mac2: mac-address@96 { /* 0x658 */
 					reg = <0x96 6>;
 				};
+
+				tmu_calib: calib@264 { /* 0xd90-0xdc0 */
+					reg = <0x264 0x10>;
+				};
 			};
 
 			anatop: clock-controller@30360000 {
-- 
2.35.1


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[PATCH v3 5/5] thermal/drivers/imx: Add support for loading calibration data from OCOTP

[Marek Vasut]

The TMU TASR, TCALIVn, TRIM registers must be explicitly programmed with
calibration values in OCOTP. Add support for reading the OCOTP calibration
data and programming those into the TMU hardware.

The MX8MM/MX8MN TMUv1 uses only one OCOTP cell, while MX8MP TMUv2 uses 4,
the programming differs in each case.

Based on U-Boot commits:
70487ff386c ("imx8mm: Load fuse for TMU TCALIV and TASR")
ebb9aab318b ("imx: load calibration parameters from fuse for i.MX8MP")

Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Adam Ford <aford173@gmail.com>
Cc: Alice Guo <alice.guo@nxp.com>
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Jun <jun.li@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: devicetree@vger.kernel.org
To: linux-pm@vger.kernel.org
To: linux-arm-kernel@lists.infradead.org
---
V2: - Add RB from Peng
    - Include slab.h to get kfree() definition
V3: - Replace %ld with %zu
---
 drivers/thermal/imx8mm_thermal.c | 164 +++++++++++++++++++++++++++++++
 1 file changed, 164 insertions(+)

diff --git a/drivers/thermal/imx8mm_thermal.c b/drivers/thermal/imx8mm_thermal.c
index e2c2673025a7a..a8b04dc0023de 100644
--- a/drivers/thermal/imx8mm_thermal.c
+++ b/drivers/thermal/imx8mm_thermal.c
@@ -10,9 +10,11 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/nvmem-consumer.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
@@ -20,6 +22,22 @@
 #define TER			0x0	/* TMU enable */
 #define TPS			0x4
 #define TRITSR			0x20	/* TMU immediate temp */
+/* TMU calibration data registers */
+#define TASR			0x28
+#define TASR_BUF_SLOPE_MASK	GENMASK(19, 16)
+#define TASR_BUF_VREF_MASK	GENMASK(4, 0)	/* TMU_V1 */
+#define TASR_BUF_VERF_SEL_MASK	GENMASK(1, 0)	/* TMU_V2 */
+#define TCALIV(n)		(0x30 + ((n) * 4))
+#define TCALIV_EN		BIT(31)
+#define TCALIV_HR_MASK		GENMASK(23, 16)	/* TMU_V1 */
+#define TCALIV_RT_MASK		GENMASK(7, 0)	/* TMU_V1 */
+#define TCALIV_SNSR105C_MASK	GENMASK(27, 16)	/* TMU_V2 */
+#define TCALIV_SNSR25C_MASK	GENMASK(11, 0)	/* TMU_V2 */
+#define TRIM			0x3c
+#define TRIM_BJT_CUR_MASK	GENMASK(23, 20)
+#define TRIM_BGR_MASK		GENMASK(31, 28)
+#define TRIM_VLSB_MASK		GENMASK(15, 12)
+#define TRIM_EN_CH		BIT(7)
 
 #define TER_ADC_PD		BIT(30)
 #define TER_EN			BIT(31)
@@ -32,6 +50,25 @@
 #define SIGN_BIT		BIT(7)
 #define TEMP_VAL_MASK		GENMASK(6, 0)
 
+/* TMU OCOTP calibration data bitfields */
+#define ANA0_EN			BIT(25)
+#define ANA0_BUF_VREF_MASK	GENMASK(24, 20)
+#define ANA0_BUF_SLOPE_MASK	GENMASK(19, 16)
+#define ANA0_HR_MASK		GENMASK(15, 8)
+#define ANA0_RT_MASK		GENMASK(7, 0)
+#define TRIM2_VLSB_MASK		GENMASK(23, 20)
+#define TRIM2_BGR_MASK		GENMASK(19, 16)
+#define TRIM2_BJT_CUR_MASK	GENMASK(15, 12)
+#define TRIM2_BUF_SLOP_SEL_MASK	GENMASK(11, 8)
+#define TRIM2_BUF_VERF_SEL_MASK	GENMASK(7, 6)
+#define TRIM3_TCA25_0_LSB_MASK	GENMASK(31, 28)
+#define TRIM3_TCA40_0_MASK	GENMASK(27, 16)
+#define TRIM4_TCA40_1_MASK	GENMASK(31, 20)
+#define TRIM4_TCA105_0_MASK	GENMASK(19, 8)
+#define TRIM4_TCA25_0_MSB_MASK	GENMASK(7, 0)
+#define TRIM5_TCA105_1_MASK	GENMASK(23, 12)
+#define TRIM5_TCA25_1_MASK	GENMASK(11, 0)
+
 #define VER1_TEMP_LOW_LIMIT	10000
 #define VER2_TEMP_LOW_LIMIT	-40000
 #define VER2_TEMP_HIGH_LIMIT	125000
@@ -128,6 +165,129 @@ static void imx8mm_tmu_probe_sel_all(struct imx8mm_tmu *tmu)
 	writel_relaxed(val, tmu->base + TPS);
 }
 
+static int imx8mm_tmu_probe_set_calib_v1(struct platform_device *pdev,
+					 struct imx8mm_tmu *tmu)
+{
+	struct device *dev = &pdev->dev;
+	u32 ana0;
+	int ret;
+
+	ret = nvmem_cell_read_u32(&pdev->dev, "calib", &ana0);
+	if (ret) {
+		dev_warn(dev, "Failed to read OCOTP nvmem cell (%d).\n", ret);
+		return ret;
+	}
+
+	writel(FIELD_PREP(TASR_BUF_VREF_MASK,
+			  FIELD_GET(ANA0_BUF_VREF_MASK, ana0)) |
+	       FIELD_PREP(TASR_BUF_SLOPE_MASK,
+			  FIELD_GET(ANA0_BUF_SLOPE_MASK, ana0)),
+	       tmu->base + TASR);
+
+	writel(FIELD_PREP(TCALIV_RT_MASK, FIELD_GET(ANA0_RT_MASK, ana0)) |
+	       FIELD_PREP(TCALIV_HR_MASK, FIELD_GET(ANA0_HR_MASK, ana0)) |
+	       ((ana0 & ANA0_EN) ? TCALIV_EN : 0),
+	       tmu->base + TCALIV(0));
+
+	return 0;
+}
+
+static int imx8mm_tmu_probe_set_calib_v2(struct platform_device *pdev,
+					 struct imx8mm_tmu *tmu)
+{
+	struct device *dev = &pdev->dev;
+	struct nvmem_cell *cell;
+	u32 trim[4] = { 0 };
+	size_t len;
+	void *buf;
+
+	cell = nvmem_cell_get(dev, "calib");
+	if (IS_ERR(cell))
+		return PTR_ERR(cell);
+
+	buf = nvmem_cell_read(cell, &len);
+	nvmem_cell_put(cell);
+
+	if (IS_ERR(buf))
+		return PTR_ERR(buf);
+
+	memcpy(trim, buf, min(len, sizeof(trim)));
+	kfree(buf);
+
+	if (len != 16) {
+		dev_err(dev,
+			"OCOTP nvmem cell length is %zu, must be 16.\n", len);
+		return -EINVAL;
+	}
+
+	/* Blank sample hardware */
+	if (!trim[0] && !trim[1] && !trim[2] && !trim[3]) {
+		/* Use a default 25C binary codes */
+		writel(FIELD_PREP(TCALIV_SNSR25C_MASK, 0x63c),
+		       tmu->base + TCALIV(0));
+		writel(FIELD_PREP(TCALIV_SNSR25C_MASK, 0x63c),
+		       tmu->base + TCALIV(1));
+		return 0;
+	}
+
+	writel(FIELD_PREP(TASR_BUF_VERF_SEL_MASK,
+			  FIELD_GET(TRIM2_BUF_VERF_SEL_MASK, trim[0])) |
+	       FIELD_PREP(TASR_BUF_SLOPE_MASK,
+			  FIELD_GET(TRIM2_BUF_SLOP_SEL_MASK, trim[0])),
+	       tmu->base + TASR);
+
+	writel(FIELD_PREP(TRIM_BJT_CUR_MASK,
+			  FIELD_GET(TRIM2_BJT_CUR_MASK, trim[0])) |
+	       FIELD_PREP(TRIM_BGR_MASK, FIELD_GET(TRIM2_BGR_MASK, trim[0])) |
+	       FIELD_PREP(TRIM_VLSB_MASK, FIELD_GET(TRIM2_VLSB_MASK, trim[0])) |
+	       TRIM_EN_CH,
+	       tmu->base + TRIM);
+
+	writel(FIELD_PREP(TCALIV_SNSR25C_MASK,
+			  FIELD_GET(TRIM3_TCA25_0_LSB_MASK, trim[1]) |
+			  (FIELD_GET(TRIM4_TCA25_0_MSB_MASK, trim[2]) << 4)) |
+	       FIELD_PREP(TCALIV_SNSR105C_MASK,
+			  FIELD_GET(TRIM4_TCA105_0_MASK, trim[2])),
+	       tmu->base + TCALIV(0));
+
+	writel(FIELD_PREP(TCALIV_SNSR25C_MASK,
+			  FIELD_GET(TRIM5_TCA25_1_MASK, trim[3])) |
+	       FIELD_PREP(TCALIV_SNSR105C_MASK,
+			  FIELD_GET(TRIM5_TCA105_1_MASK, trim[3])),
+	       tmu->base + TCALIV(1));
+
+	writel(FIELD_PREP(TCALIV_SNSR25C_MASK,
+			  FIELD_GET(TRIM3_TCA40_0_MASK, trim[1])) |
+	       FIELD_PREP(TCALIV_SNSR105C_MASK,
+			  FIELD_GET(TRIM4_TCA40_1_MASK, trim[2])),
+	       tmu->base + TCALIV(2));
+
+	return 0;
+}
+
+static int imx8mm_tmu_probe_set_calib(struct platform_device *pdev,
+				      struct imx8mm_tmu *tmu)
+{
+	struct device *dev = &pdev->dev;
+
+	/*
+	 * Lack of calibration data OCOTP reference is not considered
+	 * fatal to retain compatibility with old DTs. It is however
+	 * strongly recommended to update such old DTs to get correct
+	 * temperature compensation values for each SoC.
+	 */
+	if (!of_find_property(pdev->dev.of_node, "nvmem-cells", NULL)) {
+		dev_warn(dev,
+			 "No OCOTP nvmem reference found, SoC-specific calibration not loaded. Please update your DT.\n");
+		return 0;
+	}
+
+	if (tmu->socdata->version == TMU_VER1)
+		return imx8mm_tmu_probe_set_calib_v1(pdev, tmu);
+
+	return imx8mm_tmu_probe_set_calib_v2(pdev, tmu);
+}
+
 static int imx8mm_tmu_probe(struct platform_device *pdev)
 {
 	const struct thermal_soc_data *data;
@@ -180,6 +340,10 @@ static int imx8mm_tmu_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, tmu);
 
+	ret = imx8mm_tmu_probe_set_calib(pdev, tmu);
+	if (ret)
+		goto disable_clk;
+
 	/* enable all the probes for V2 TMU */
 	if (tmu->socdata->version == TMU_VER2)
 		imx8mm_tmu_probe_sel_all(tmu);
-- 
2.35.1


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Re: [PATCH v3 1/5] dt-bindings: thermal: imx8mm-thermal: Document optional nvmem-cells

[Daniel Lezcano]

On 02/12/2022 17:23, Marek Vasut wrote:
> The TMU TASR, TCALIVn, TRIM registers must be explicitly programmed with
> calibration values from OCOTP. Document optional phandle to OCOTP nvmem
> provider.
> 
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Signed-off-by: Marek Vasut <marex@denx.de>
>

Applied, thanks

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Re: [PATCH v3 5/5] thermal/drivers/imx: Add support for loading calibration data from OCOTP

[Daniel Lezcano]

On 02/12/2022 17:23, Marek Vasut wrote:
> The TMU TASR, TCALIVn, TRIM registers must be explicitly programmed with
> calibration values in OCOTP. Add support for reading the OCOTP calibration
> data and programming those into the TMU hardware.
> 
> The MX8MM/MX8MN TMUv1 uses only one OCOTP cell, while MX8MP TMUv2 uses 4,
> the programming differs in each case.
> 
> Based on U-Boot commits:
> 70487ff386c ("imx8mm: Load fuse for TMU TCALIV and TASR")
> ebb9aab318b ("imx: load calibration parameters from fuse for i.MX8MP")
> 
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
> Signed-off-by: Marek Vasut <marex@denx.de>


Applied, thanks

-- 
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Re: [PATCH v3 2/5] arm64: dts: imx8m: Align SoC unique ID node unit address

[Shawn Guo]

On Fri, Dec 02, 2022 at 05:23:50PM +0100, Marek Vasut wrote:
> Align the SoC unique ID DT node unit address with its reg property.
> 
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
> Fixes: cbff23797fa1 ("arm64: dts: imx8m: add NVMEM provider and consumer to read soc unique ID")
> Signed-off-by: Marek Vasut <marex@denx.de>

Applied 2/5, 3/5 and 4/5, thanks!

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