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Tue, 03 Sep 2024 04:00:18 -0700 (PDT) Received: from [192.168.50.4] ([82.78.167.144]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a806d87633sm507928685a.136.2024.09.03.04.00.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 03 Sep 2024 04:00:18 -0700 (PDT) Message-ID: Date: Tue, 3 Sep 2024 14:00:11 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 00/16] Add initial USB support for the Renesas RZ/G3S SoC Content-Language: en-US To: Biju Das , Ulf Hansson Cc: "vkoul@kernel.org" , "kishon@kernel.org" , "robh@kernel.org" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , "p.zabel@pengutronix.de" , "geert+renesas@glider.be" , "magnus.damm@gmail.com" , "gregkh@linuxfoundation.org" , "mturquette@baylibre.com" , "sboyd@kernel.org" , Yoshihiro Shimoda , "linux-phy@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-renesas-soc@vger.kernel.org" , "linux-usb@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-clk@vger.kernel.org" , "linux-pm@vger.kernel.org" , Claudiu Beznea References: <20240822152801.602318-1-claudiu.beznea.uj@bp.renesas.com> <99bef301-9f6c-4797-b47e-c83e56dfbda9@tuxon.dev> <5556d176-cca7-492c-ba21-48256d5d6338@tuxon.dev> <590a4fb2-24b2-432b-92db-534c5a52ed0b@tuxon.dev> <35dc7414-f5bd-4ed4-bfa1-f723f4f0078c@tuxon.dev> From: claudiu beznea In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240903_040020_149698_5C175753 X-CRM114-Status: GOOD ( 13.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 03.09.2024 13:31, Biju Das wrote: >>> During boot clr USB PWR READY signal in TF-A. >>> STR case, suspend set USB PWR READY signal in TF-A. >>> STR case, resume clr USB PWR READY signal in TF-A. >> As I said previously, it can be done in different ways. My point was to let Linux set what it needs >> for all it's devices to work. I think the way to go forward is a maintainer decision. > > I agree, there can be n number of solution for a problem. > > Since you modelled system state signal (USB PWRRDY) as reset control signal, it is reset/DT maintainer's decision > to say the final word whether this signal fits in reset system framework or not? I was thinking: 1/ Geert would be the best to say if he considers it OK to handle this in Linux 2/ if OK, then we should get approval from Ulf and Philipp on the power domain or reset approaches Thank you, Claudiu Beznea > > Cheers, > biju