From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: David Heidelberg <david@ixit.cz>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Dylan Van Assche <me@dylanvanassche.be>
Cc: linux-arm-msm@vger.kernel.org,
Petr Hodina <phodina@protonmail.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
phone-devel@vger.kernel.org,
Casey Connolly <casey.connolly@linaro.org>
Subject: Re: [PATCH 2/3] arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock
Date: Tue, 24 Mar 2026 10:42:13 +0100 [thread overview]
Message-ID: <195b2ec2-d51a-42b2-8221-2a60823f8ea6@oss.qualcomm.com> (raw)
In-Reply-To: <d51b237c-8079-4398-8b8b-ec6a6876b173@ixit.cz>
On 3/24/26 12:15 AM, David Heidelberg wrote:
>
>
> On 23/03/2026 10:56, Konrad Dybcio wrote:
>> On 3/20/26 5:29 PM, David Heidelberg via B4 Relay wrote:
>>> From: Casey Connolly <casey.connolly@linaro.org>
>>>
>>> Sets a higher rate than the default for good responsiveness of
>>> touchscreen.
>>>
>>> Signed-off-by: Casey Connolly <casey.connolly@linaro.org>
>>> Signed-off-by: David Heidelberg <david@ixit.cz>
>>> ---
>>
>> I assume this is in line with downstream (i.e. you're not trying to make
>> the panel IC work too hard?)
>
> When bus frequency is not specified in DTS (which isn't in this case), downstream set i2c bus to 400 kHz.
>
> See
> https://github.com/SHIFTPHONES/android_kernel_shift_sdm845/blob/lineage/lineage-20/drivers/i2c/busses/i2c-qcom-geni.c#L894
OK
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2026-03-24 9:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-20 16:29 [PATCH 0/3] SHIFT 6MQ SD-card support, improved responsivness of touchscreen, and codec David Heidelberg via B4 Relay
2026-03-20 16:29 ` [PATCH 1/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable sdcard David Heidelberg via B4 Relay
2026-03-20 16:56 ` Casey Connolly
2026-03-20 17:02 ` David Heidelberg
2026-03-20 17:03 ` Casey Connolly
2026-03-23 11:28 ` Konrad Dybcio
2026-03-20 16:29 ` [PATCH 2/3] arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock David Heidelberg via B4 Relay
2026-03-21 7:01 ` Dmitry Baryshkov
2026-03-23 9:56 ` Konrad Dybcio
2026-03-23 23:15 ` David Heidelberg
2026-03-24 9:42 ` Konrad Dybcio [this message]
2026-03-20 16:29 ` [PATCH 3/3] arm64: dts: qcom: sdm845-shift-axolotl: Enable TFA9890 codec David Heidelberg via B4 Relay
2026-03-21 7:02 ` Dmitry Baryshkov
2026-03-23 9:56 ` Konrad Dybcio
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