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Message-ID: <e7c997a3-8d68-410d-9f04-8637d76a0d61@linaro.org>
Date: Mon, 10 Jun 2024 17:05:57 +0200
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Subject: Re: [PATCH v9 2/2] power: pwrseq: add a driver for the PMU module on
 the QCom WCN chipsets
To: Bartosz Golaszewski <brgl@bgdev.pl>, Marcel Holtmann
 <marcel@holtmann.org>, Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
 "David S . Miller" <davem@davemloft.net>, Eric Dumazet
 <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>,
 Paolo Abeni <pabeni@redhat.com>, Rob Herring <robh@kernel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
 Conor Dooley <conor+dt@kernel.org>, Kalle Valo <kvalo@kernel.org>,
 Bjorn Andersson <andersson@kernel.org>,
 Konrad Dybcio <konrad.dybcio@linaro.org>, Liam Girdwood
 <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>,
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>,
 Bjorn Helgaas <bhelgaas@google.com>, Saravana Kannan <saravanak@google.com>,
 Geert Uytterhoeven <geert+renesas@glider.be>, Arnd Bergmann <arnd@arndb.de>,
 Neil Armstrong <neil.armstrong@linaro.org>,
 Marek Szyprowski <m.szyprowski@samsung.com>, Alex Elder <elder@linaro.org>,
 Srini Kandagatla <srinivas.kandagatla@linaro.org>,
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
 Abel Vesa <abel.vesa@linaro.org>, Manivannan Sadhasivam <mani@kernel.org>,
 Lukas Wunner <lukas@wunner.de>,
 Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
 Amit Pundir <amit.pundir@linaro.org>, Xilin Wu <wuxilin123@gmail.com>
Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org,
 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org,
 linux-pm@vger.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
 Caleb Connolly <caleb.connolly@linaro.org>
References: <20240605123850.24857-1-brgl@bgdev.pl>
 <20240605123850.24857-3-brgl@bgdev.pl>
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20240605123850.24857-3-brgl@bgdev.pl>
Content-Type: text/plain; charset=UTF-8
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On 05/06/2024 14:38, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> This adds the power sequencing driver for the PMU modules present on the
> Qualcomm WCN Bluetooth and Wifi chipsets. It uses the pwrseq subsystem
> and knows how to match the sequencer to the consumer device by verifying
> the relevant properties and DT layout. Using this driver will allow the
> BT and WLAN drivers to respect the required delays between enabling the
> two modules.
> 

...


> +
> +	ctx->bt_gpio = devm_gpiod_get_optional(dev, "bt-enable", GPIOD_OUT_LOW);
> +	if (IS_ERR(ctx->bt_gpio))
> +		return dev_err_probe(dev, PTR_ERR(ctx->bt_gpio),
> +				     "Failed to get the Bluetooth enable GPIO\n");
> +
> +	ctx->wlan_gpio = devm_gpiod_get_optional(dev, "wlan-enable",
> +						 GPIOD_OUT_LOW);
> +	if (IS_ERR(ctx->wlan_gpio))
> +		return dev_err_probe(dev, PTR_ERR(ctx->wlan_gpio),
> +				     "Failed to get the WLAN enable GPIO\n");
> +
> +	ctx->clk = devm_clk_get_optional(dev, NULL);

Your binding does not allow the clock. Do you need it for non-DT platforms?

Best regards,
Krzysztof