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Date: Tue, 9 Jan 2024 17:34:44 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Kalle Valo <kvalo@...nel.org>
Cc: Jeff Johnson <quic_jjohnson@...cinc.com>, Bartosz Golaszewski <brgl@...ev.pl>, 
	"David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Bjorn Helgaas <bhelgaas@...gle.com>, Heiko Stuebner <heiko@...ech.de>, 
	Jernej Skrabec <jernej.skrabec@...il.com>, Chris Morgan <macromorgan@...mail.com>, 
	Linus Walleij <linus.walleij@...aro.org>, Geert Uytterhoeven <geert+renesas@...der.be>, 
	Arnd Bergmann <arnd@...db.de>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Nícolas F . R . A . Prado <nfraprado@...labora.com>, 
	Marek Szyprowski <m.szyprowski@...sung.com>, Peng Fan <peng.fan@....com>, 
	Robert Richter <rrichter@....com>, Dan Williams <dan.j.williams@...el.com>, 
	Jonathan Cameron <Jonathan.Cameron@...wei.com>, Terry Bowman <terry.bowman@....com>, 
	Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>, 
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>, 
	Huacai Chen <chenhuacai@...nel.org>, Alex Elder <elder@...aro.org>, 
	Srini Kandagatla <srinivas.kandagatla@...aro.org>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [RFC 8/9] PCI/pwrseq: add a pwrseq driver for QCA6390

On Tue, Jan 9, 2024 at 5:18 PM Kalle Valo <kvalo@...nel.org> wrote:
>
> Jeff Johnson <quic_jjohnson@...cinc.com> writes:
>
> > On 1/4/2024 5:01 AM, Bartosz Golaszewski wrote:
> >> diff --git a/drivers/pci/pcie/pwrseq/Kconfig b/drivers/pci/pcie/pwrseq/Kconfig
> >> index 010e31f432c9..f9fe555b8506 100644
> >> --- a/drivers/pci/pcie/pwrseq/Kconfig
> >> +++ b/drivers/pci/pcie/pwrseq/Kconfig
> >> @@ -6,3 +6,14 @@ menuconfig PCIE_PWRSEQ
> >>      help
> >>        Say yes here to enable support for PCIe power sequencing
> >>        drivers.
> >> +
> >> +if PCIE_PWRSEQ
> >> +
> >> +config PCIE_PWRSEQ_QCA6390
> >> +    tristate "PCIe Power Sequencing driver for QCA6390"
> >> +    depends on ARCH_QCOM || COMPILE_TEST
> >> +    help
> >> +      Enable support for the PCIe power sequencing driver for the
> >> +      ath11k module of the QCA6390 WLAN/BT chip.
> >> +
> >> +endif
> >
> > As I mentioned in the 5/9 patch I'm concerned that the current
> > definition of PCIE_PWRSEQ and PCIE_PWRSEQ_QCA6390 will effectively hide
> > the fact that QCA6390 may need additional configuration since the menu
> > item will only show up if you have already enabled PCIE_PWRSEQ.
> > Yes I see that these are set in the defconfig in 9/9 but I'm concerned
> > about the more generic case.
> >
> > I'm wondering if there should be a separate config QCA6390 within ath11k
> > which would then select PCIE_PWRSEQ and PCIE_PWRSEQ_QCA6390
>
> Or is it possible to provide an optional dependency in Kconfig (I guess

imply PCIE_PWRSEQ
imply PCIE_PWRSEQ_QCA6390
?

> not)? Or what about mentioning about PCIE_PWRSEQ_QCA6390 in ATH11K_PCI
> help text?

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