From: Bryan O'Donoghue <bod@kernel.org>
To: Jagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Brian Masney <bmasney@redhat.com>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Taniya Das <taniya.das@oss.qualcomm.com>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Subject: Re: [PATCH v4 2/3] clk: qcom: camcc-glymur: Add camera clock controller driver
Date: Mon, 25 May 2026 08:49:46 +0100 [thread overview]
Message-ID: <639c94f9-6f62-4502-ad7e-5ae60f5f6d02@kernel.org> (raw)
In-Reply-To: <66335474-d600-45ab-9ac6-e946f24142c8@oss.qualcomm.com>
On 25/05/2026 08:06, Jagadeesh Kona wrote:
>> That's not in your overview letter so generally I'd advise to include things like "did X because Y" - "didn't do Q because Z" anyway, how does it make a difference if the values are static ?
>>
>> They are no less magic numbers that way.
>>
>> What exactly is the resistance to defining the bits ?
>>
>> I'll state again - when a vendor is submitting something upstream where that vendor 100% controls their own documentation - there's no reason at all to be presenting magic hex numbers - even more the case with generated code.
>>
>> Just update the script to enumerate the bit fields, I honestly don't get the aversion.
>>
> Hi Bryan,
>
> There’s no standard interface for these bits, and bit definitions/fields vary across PLL types.
> So, common macros aren’t feasible and would need redefinitions per controller. Since these bits
> are not reused elsewhere
- Asking for named bits not common macros
- Reuse isn't why you name a bit
, IMO directly using values from the hardware documentation keeps the
> implementation simpler, avoids unnecessary abstraction, and makes debugging—through direct
> comparison with the hardware spec easier.
How are hex values in upstream code easier to debug ?
Without the spec you can't change or understand hex values in upstream
code, which is the whole point I'm making here.
---
bod
next prev parent reply other threads:[~2026-05-25 7:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-17 17:33 [PATCH v4 0/3] Add camera clock controller support on Glymur platform Jagadeesh Kona
2026-05-17 17:33 ` [PATCH v4 1/3] dt-bindings: clock: qcom: Add Glymur camera clock controller Jagadeesh Kona
2026-06-12 12:35 ` Vladimir Zapolskiy
2026-05-17 17:33 ` [PATCH v4 2/3] clk: qcom: camcc-glymur: Add camera clock controller driver Jagadeesh Kona
2026-05-18 7:35 ` Bryan O'Donoghue
2026-05-18 10:23 ` Jagadeesh Kona
2026-05-18 12:21 ` Bryan O'Donoghue
2026-05-25 7:06 ` Jagadeesh Kona
2026-05-25 7:49 ` Bryan O'Donoghue [this message]
2026-06-11 8:51 ` Konrad Dybcio
2026-06-12 6:31 ` Dmitry Baryshkov
2026-06-12 11:14 ` Bryan O'Donoghue
2026-06-22 17:50 ` Taniya Das
2026-06-12 12:40 ` Vladimir Zapolskiy
2026-05-17 17:33 ` [PATCH v4 3/3] arm64: dts: qcom: glymur: Add camera clock controller support Jagadeesh Kona
2026-06-12 12:42 ` Vladimir Zapolskiy
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