Re: [PATCH v7 3/5] iio: adc: versal-sysmon: add I2C driver

[Andy Shevchenko]

On Mon, Jun 15, 2026 at 12:37:20AM +0100, Salih Erim wrote:
> Add an I2C transport driver for the Versal SysMon block. The SysMon
> provides an I2C slave interface that allows an external master to
> read voltage and temperature measurements through the same register
> map used by the MMIO path.
> 
> The I2C command frame is an 8-byte structure containing a 4-byte data
> payload, a 2-byte register offset, and a 1-byte instruction field.
> Read operations send the frame with a read instruction, then receive
> a 4-byte response containing the register value.
> 
> Events are not supported on the I2C path because there is no
> interrupt line and the I2C regmap backend cannot be called from
> atomic context.

...

> +static const struct regmap_config sysmon_i2c_regmap_config = {
> +	.reg_bits = 32,
> +	.val_bits = 32,
> +	.reg_stride = SYSMON_REG_STRIDE,
> +	.max_register = SYSMON_MAX_REG,
> +	.reg_read = sysmon_i2c_reg_read,
> +	.reg_write = sysmon_i2c_reg_write,
> +};

No cache?

-- 
With Best Regards,
Andy Shevchenko