Re: [PATCH V3 4/6] hte: Add Tegra234 provider

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On 10/03/2023 20:06, Dipen Patel wrote:
> This patch adds HTE provider support for the Tegra234 and reflects the
> changes made in the device tree as follow.
> - Add slices field in the SoC specific structure
> - Remove gpio chip find by name function instead make use of the phandle
> parsed from the DT node
> 
> Signed-off-by: Dipen Patel <dipenp@xxxxxxxxxx>

(...)

>  	hte_dev->regs = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(hte_dev->regs))
>  		return PTR_ERR(hte_dev->regs);
> @@ -635,8 +750,15 @@ static int tegra_hte_probe(struct platform_device *pdev)
>  
>  		gc->match_from_linedata = tegra_hte_match_from_linedata;
>  
> -		hte_dev->c = gpiochip_find("tegra194-gpio-aon",
> -					   tegra_get_gpiochip_from_name);
> +		gpio_ctrl = of_parse_phandle(dev->of_node,
> +					     "nvidia,gpio-controller", 0);
> +		if (!gpio_ctrl) {
> +			dev_err(dev, "gpio controller node not found\n");
> +			return -ENODEV;

This is non-bisectable patchset. Remember that DTS cannot go with the
code, thus your code should handle existing DTS (which is BTW already
released with v6.2).

Any remarks to comments that no ABI was broken back then in 2022 are not
valid now. They were valid that time, but sorry, the time passed.

Best regards,
Krzysztof




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