[PATCH v4 2/4] thermal: qoriq: add i.MX93 tmu support

[Daniel Lezcano]

On 21/08/2025 08:23, Jacky Bai wrote:
> For Thermal monitor unit(TMU) used on i.MX93, the HW revision info read
> from the ID register is the same the one used on some of the QorIQ
> platform, but the config has some slight differance. Add i.MX93 compatible
> string and corresponding code for it.
> 
> Signed-off-by: Alice Guo <alice.guo at nxp.com>
> Reviewed-by: Frank Li <Frank.Li at nxp.com>
> Signed-off-by: Jacky Bai <ping.bai at nxp.com>
> ---
>   - v4 changes:
>    - no
> 
>   - v3 changes:
>    - use the drv data struct for match data and refine the code
>    - update the copyright
> 
>   - v2 changes:
>    - use the compatible match data to identify the i.MX93 TMU variant
> ---
>   drivers/thermal/qoriq_thermal.c | 18 +++++++++++++++++-
>   1 file changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
> index 01b58be0dcc64d14ca5e4bba654eed8f15e827fc..b2e634547271dcf512c714907baa162921d2d527 100644
> --- a/drivers/thermal/qoriq_thermal.c
> +++ b/drivers/thermal/qoriq_thermal.c
> @@ -1,6 +1,7 @@
>   // SPDX-License-Identifier: GPL-2.0
>   //
>   // Copyright 2016 Freescale Semiconductor, Inc.
> +// Copyright 2025 NXP
>   
>   #include <linux/clk.h>
>   #include <linux/err.h>
> @@ -24,6 +25,7 @@
>   #define TMTMIR_DEFAULT	0x0000000f
>   #define TIER_DISABLE	0x0
>   #define TEUMR0_V2		0x51009c00
> +#define TEUMR0_V21		0x55000c00
>   #define TMSARA_V2		0xe
>   #define TMU_VER1		0x1
>   #define TMU_VER2		0x2
> @@ -66,6 +68,8 @@
>   						   */
>   #define REGS_V2_TEUMR(n)	(0xf00 + 4 * (n))
>   
> +#define GET_TEUMR0(drvdata)	(drvdata && drvdata->teumr0 ? drvdata->teumr0 : TEUMR0_V2)

This is not adequate for code which will evolve. Please don't use this 
macro.

>   /*
>    * Thermal zone data
>    */
> @@ -73,12 +77,17 @@ struct qoriq_sensor {
>   	int				id;
>   };
>   
> +struct tmu_drvdata {
> +	u32 teumr0;
> +};
> +
>   struct qoriq_tmu_data {
>   	int ver;
>   	u32 ttrcr[NUM_TTRCR_MAX];
>   	struct regmap *regmap;
>   	struct clk *clk;
>   	struct qoriq_sensor	sensor[SITES_MAX];
> +	const struct tmu_drvdata *drvdata;

The drvdata pointer is not usually used.

	u32 model;

>   };
>   
>   static struct qoriq_tmu_data *qoriq_sensor_to_data(struct qoriq_sensor *s)
> @@ -234,7 +243,7 @@ static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
>   		regmap_write(data->regmap, REGS_TMTMIR, TMTMIR_DEFAULT);
>   	} else {
>   		regmap_write(data->regmap, REGS_V2_TMTMIR, TMTMIR_DEFAULT);
> -		regmap_write(data->regmap, REGS_V2_TEUMR(0), TEUMR0_V2);
> +		regmap_write(data->regmap, REGS_V2_TEUMR(0), GET_TEUMR0(data->drvdata));

		
	regmap_write(data->regmap, REGS_V2_TEUMR(0), data->model);
>   	}
>   
>   	/* Disable monitoring */
> @@ -319,6 +328,8 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
>   
>   	data->ver = (ver >> 8) & 0xff;
>   
> +	data->drvdata = of_device_get_match_data(&pdev->dev);
> +
>   	qoriq_tmu_init_device(data);	/* TMU initialization */
>   
>   	ret = qoriq_tmu_calibration(dev, data);	/* TMU calibration */
> @@ -376,9 +387,14 @@ static int qoriq_tmu_resume(struct device *dev)
>   static DEFINE_SIMPLE_DEV_PM_OPS(qoriq_tmu_pm_ops,
>   				qoriq_tmu_suspend, qoriq_tmu_resume);
>   
> +static const struct tmu_drvdata imx93_data = {
> +	.teumr0 = TEUMR0_V21,
> +};
> +

Do the change for everyone

static const struct tmu_drvdata imx8mq_data = {
	.model = TEUMR0_V2,
};

static const struct tmu_drvdata qoriq_data = {
	.model = TEUMR0_V2,
};

>   static const struct of_device_id qoriq_tmu_match[] = {
>   	{ .compatible = "fsl,qoriq-tmu", },
>   	{ .compatible = "fsl,imx8mq-tmu", },
> +	{ .compatible = "fsl,imx93-tmu", .data = &imx93_data },
>   	{},
>   };
>   MODULE_DEVICE_TABLE(of, qoriq_tmu_match);

Thanks


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