Linux GPIO subsystem development
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From: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
To: Bartosz Golaszewski <brgl@kernel.org>
Cc: "Alex Elder" <elder@riscstar.com>,
	"Daniel Thompson" <daniel@riscstar.com>,
	linux-pci@vger.kernel.org, devicetree@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Manivannan Sadhasivam" <mani@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Chaitanya Chundru" <krishna.chundru@oss.qualcomm.com>,
	"Linus Walleij" <linusw@kernel.org>,
	"Bjorn Andersson" <andersson@kernel.org>,
	"Konrad Dybcio" <konradybcio@kernel.org>,
	"Michael Walle" <mwalle@kernel.org>
Subject: Re: [PATCH v2 2/5] gpio: tc9563: add support for the embedded GPIO controller
Date: Thu, 3 Sep 2026 10:56:31 +0200	[thread overview]
Message-ID: <apk2PzowUumzH_Ly@lore-desk> (raw)
In-Reply-To: <CAMRc=Mf6-7Y7nDvBA-zpw10_EeQ9mr+TkLfr_msBU7EU58LQ=A@mail.gmail.com>

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> On Thu, 3 Sep 2026 09:52:58 +0200, Lorenzo Bianconi
> <lorenzo.bianconi@oss.qualcomm.com> said:
> > From: Alex Elder <elder@riscstar.com>
> >
> > Add a driver for the GPIO controller embedded in the Toshiba TC9563
> > PCIe switch (and the Qualcomm QPS615). The device implements 35
> > GPIOs using two register banks: three registers control the first 32
> > GPIOs (20 and 21 are reserved) and three more control GPIOs 32-36.
> > GPIOs 22-24, 27-28, 31, and 34 are input-only.
> >
> > The driver is registered as an auxiliary device driver; the TC9563
> > power controller creates the auxiliary device and provides a regmap
> > that gives access to the GPIO registers, so the gpio-regmap helpers
> > are used to implement the GPIO chip.
> >
> > Signed-off-by: Alex Elder <elder@riscstar.com>
> > Co-developed-by: Daniel Thompson <daniel@riscstar.com>
> > Signed-off-by: Daniel Thompson <daniel@riscstar.com>
> > Co-developed-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
> > Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
> > ---
> 
> Looks good to me. What is the merge strategy? If you want Bjorn to take it
> through the PCI tree:
> 
> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Hi Bartosz,

thx for the review. I am completely fine if this series goes via pci tree.

Regards,
Lorenzo

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  reply	other threads:[~2026-09-03  8:56 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-03  7:52 [PATCH v2 0/5] PCI/pwrctrl: tc9563: introduce support for embedded GPIO controller Lorenzo Bianconi
2026-09-03  7:52 ` [PATCH v2 1/5] dt-bindings: PCI: toshiba,tc9563: document " Lorenzo Bianconi
2026-09-03  7:52 ` [PATCH v2 2/5] gpio: tc9563: add support for the " Lorenzo Bianconi
2026-09-03  8:50   ` Bartosz Golaszewski
2026-09-03  8:56     ` Lorenzo Bianconi [this message]
2026-09-03 13:55   ` Manivannan Sadhasivam
2026-09-03  7:52 ` [PATCH v2 3/5] PCI/pwrctrl: tc9563: add GPIO auxiliary device support Lorenzo Bianconi
2026-09-03  8:47   ` Bartosz Golaszewski
2026-09-03  8:57     ` Lorenzo Bianconi
2026-09-03 14:04   ` Manivannan Sadhasivam
2026-09-04 13:51     ` Lorenzo Bianconi
2026-09-03 21:17   ` Bjorn Helgaas
2026-09-04 13:59     ` Lorenzo Bianconi
2026-09-03  7:53 ` [PATCH v2 4/5] PCI/pwrctrl: tc9563: switch per-port reset to GPIO descriptor API Lorenzo Bianconi
2026-09-03  8:49   ` Bartosz Golaszewski
2026-09-03 14:07   ` Manivannan Sadhasivam
2026-09-03 22:03   ` Bjorn Helgaas
2026-09-04 14:35     ` Lorenzo Bianconi
2026-09-03  7:53 ` [PATCH v2 5/5] arm64: dts: qcom: qcs6490-rb3gen2: enable TC9563 embedded GPIO controller Lorenzo Bianconi
2026-09-03  8:41   ` Bartosz Golaszewski
2026-09-03 13:00   ` Abel Vesa

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