linux-kernel - Re: [PATCH v1 2/3] drivers: clk: tegra: add DFLL support for Tegra 4

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Message-ID: <bd60283a-500a-4ed4-bb8b-c019d33f94cf@kernel.org>
Date: Sun, 4 May 2025 18:23:50 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Svyatoslav Ryhel <clamor95@...il.com>
Cc: Thierry Reding <thierry.reding@...il.com>,
 Jonathan Hunter <jonathanh@...dia.com>,
 Peter De Schrijver <pdeschrijver@...dia.com>,
 Prashant Gaikwad <pgaikwad@...dia.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
 Viresh Kumar <viresh.kumar@...aro.org>,
 Philipp Zabel <p.zabel@...gutronix.de>, linux-tegra@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
 linux-pm@...r.kernel.org
Subject: Re: [PATCH v1 2/3] drivers: clk: tegra: add DFLL support for Tegra 4

On 03/05/2025 10:54, Svyatoslav Ryhel wrote:
>>> +/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
>>> +/*
>>> + * This header provides Tegra114-specific constants for binding
>>> + * nvidia,tegra114-car.
>>> + */
>>> +
>>> +#ifndef _DT_BINDINGS_RESET_TEGRA114_CAR_H
>>> +#define _DT_BINDINGS_RESET_TEGRA114_CAR_H
>>> +
>>> +#define TEGRA114_RESET(x)            (5 * 32 + (x))
>>
>>
>> Does not look like a binding, but some sort of register. Binding IDs
>> start from 0 (or 1) and are incremented by 1.
>>
> 
> Hello there!
> This file add same logic for Tegra114 as Tegra124 currently
> implements, check here
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/dt-bindings/reset/tegra124-car.h?h=v6.14.5
> 
> I did not re-use Tegra124 value, though it is same, to avoid confusion
> in main Tegra114 device tree.

What confusion? Why would anyone be interested in comparing numbers thus
getting confused by different number? These are abstract IDs.

Best regards,
Krzysztof