Re: [PATCH v2 0/2] arm64: dts: qcom: eliza-evk: Enable PCIe0 and PCIe1 with M.2 and TC9563 switch

[Krishna Chaitanya Chundru]

On 7/8/2026 9:05 PM, Bjorn Andersson wrote:
> On Wed, Jul 08, 2026 at 11:47:15AM +0530, Krishna Chaitanya Chundru wrote:
>> This series enables PCIe for the Eliza EVK board (CQS SoM on EVK carrier).
>>
>> The Eliza EVK exposes two PCIe ports:
>>
>> - PCIe0 drives an M.2 E key connector. The 3.3V supply is GPIO-controlled
>>   via a TCA9538 I/O expander on I2C4. The slot hosts a WLAN module
>>   (connected over PCIe) and a Bluetooth device (connected over UART5),
>>   modelled with the pcie-m2-e-connector binding.
>>
>> - PCIe1 (8GT/s x2) connects to a Toshiba TC9563 PCIe switch, whose
>>   management interface sits on I2C4 (address 0x77). The TC9563 RESX# and
>>   PERST# lines are OR-ed internally; reset is driven via a TLMM GPIO on
>>   the RESX# pin. The iommu-map covers all downstream switch ports
>>   (SID range 0x1400-0x1408).
>>
>> The M.2 WLAN module carries a Qualcomm QCC2072 Bluetooth chip. A device-ID
>> entry is added to the M.2 power sequencer so the serdev node for the BT
>> UART interface is created on PCI enumeration.
>>
>> Bluetooth is enabled with this patch https://lore.kernel.org/all/20260529175822.3366535-1-yepuri.siddu@xxxxxxxxxxxxxxxx/
>>
>> This seris Depends-on:
>>   https://lore.kernel.org/all/20260610-eliza_dt-v1-1-7bb72b75fc5b@xxxxxxxxxxxxxxxx/
> Why send this patch, when this dependency is known bad - when would I
> ever be able to merge this patch?
>
> And why are you sending separate series concurrently with dependencies
> between them!? It's one thing to send patches saying "I depend on
> someone else's completely unrelated work", but saying "here's a random
> bunch of tangled patches, good luck everyone!" is not okay.
>
> I expect all three patches to be rebased and send in one series that I
> can just click "Submit" on next time.
Sorry for the mess, I will resend all 3 pcie patches in a single series today.

- Krishna Chaitanya.
> Thanks,
> Bjorn
>
>>   https://lore.kernel.org/all/20260630-eliza-dts-qcs-evk-v4-3-18cbbdba6e7e@xxxxxxxxxxxxxxxx/
>>   https://lore.kernel.org/all/20260630-dts-qcom-eliza-mtp-evk-add-pmics-v1-1-f4f320f7c88b@xxxxxxxxxxxxxxxx/
>>
>> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
>> ---
>> Changes in v2:
>> - Drop patch 3, as this is already applied
>> - Rebase on top of https://lore.kernel.org/all/20260708055017.A90C91F000E9@xxxxxxxxxxxxxxx/
>>   and remove pincntrl as pincntrl is added in the eliza.dtsi patch and also remove
>>   pinctrl for resx as this is covered in pcie1_default_state as perst gpio.
>> - Link to v1: https://patch.msgid.link/20260703-eliza_evk-v1-0-7624440bd76d@xxxxxxxxxxxxxxxx
>>
>> To: Bjorn Andersson <andersson@xxxxxxxxxx>
>> To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
>> To: Rob Herring <robh@xxxxxxxxxx>
>> To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
>> To: Conor Dooley <conor+dt@xxxxxxxxxx>
>> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
>> Cc: devicetree@xxxxxxxxxxxxxxx
>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>>
>> ---
>> Krishna Chaitanya Chundru (2):
>>       arm64: dts: qcom: eliza-evk: Add PCIe0 with M.2 E key connector
>>       arm64: dts: qcom: eliza-evk: Add PCIe1 with TC9563 PCIe switch
>>
>>  arch/arm64/boot/dts/qcom/eliza-evk.dtsi | 228 ++++++++++++++++++++++++++++++++
>>  arch/arm64/boot/dts/qcom/eliza.dtsi     |   2 +
>>  2 files changed, 230 insertions(+)
>> ---
>> base-commit: dc59e4fea9d83f03bad6bddf3fa2e52491777482
>> change-id: 20260629-eliza_evk-6f30686b161f
>> prerequisite-message-id: <20260708-eliza_dt-v2-1-e6281da26408@xxxxxxxxxxxxxxxx>
>> prerequisite-patch-id: 7654ff4f899ac0094a2e791e7f208998fcc7d5fa
>> prerequisite-patch-id: 9e10dfbe360941cdac0300aaf163149755952f9f
>> prerequisite-patch-id: fecce0170351baf00cbe8f6b302d1def4d99bbfc
>> prerequisite-patch-id: 97cd6cb495fdd198f6de7fbe45ef32e4a638ec9c
>> prerequisite-message-id: <20260630-dts-qcom-eliza-mtp-evk-add-pmics-v1-1-f4f320f7c88b@xxxxxxxxxxxxxxxx>
>> prerequisite-patch-id: f3615b5c1e2222a2491f862a7fba3994058ecc53
>>
>> Best regards,
>> --  
>> Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
>>