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Wed, 13 Dec 2023 23:24:53 -0800 (PST) Received: from [192.168.1.20] ([178.197.218.27]) by smtp.gmail.com with ESMTPSA id h2-20020a05600c350200b0040c44b4a282sm15575290wmq.43.2023.12.13.23.24.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 Dec 2023 23:24:52 -0800 (PST) Message-ID: <1c5ace65-2fd8-4503-b22f-e0f564d1c83f@linaro.org> Date: Thu, 14 Dec 2023 08:24:50 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 8/8] ARM: dts: aspeed: System1: PS, sensor and more Content-Language: en-US To: Ninad Palsule , robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, joel@jms.id.au, andrew@codeconstruct.com.au, peterhuewe@gmx.de, jarkko@kernel.org, jgg@ziepe.ca, keescook@chromium.org, tony.luck@intel.com, gpiccoli@igalia.com, johannes.holland@infineon.com, linux@roeck-us.net, broonie@kernel.org Cc: patrick.rudolph@9elements.com, vincent@vtremblay.dev, peteryin.openbmc@gmail.com, lakshmiy@us.ibm.com, bhelgaas@google.com, naresh.solanki@9elements.com, alexander.stein@ew.tq-group.com, festevam@denx.de, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-hardening@vger.kernel.org, geissonator@yahoo.com References: <20231212164004.1683589-1-ninad@linux.ibm.com> <20231212164004.1683589-9-ninad@linux.ibm.com> <5b98538a-8ffe-42ec-b020-514dcfcebba3@linaro.org> <44abff4a-0a8e-499b-8b98-a4a1680cb431@linux.ibm.com> <427fa99c-764c-4d6a-b9f1-cd9089710d5e@linaro.org> From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 13/12/2023 20:49, Ninad Palsule wrote: > Hello Krzysztof, > > On 12/13/23 13:37, Krzysztof Kozlowski wrote: >> On 13/12/2023 20:02, Ninad Palsule wrote: >>> Hello Krzysztof, >>> >>> On 12/12/23 14:26, Krzysztof Kozlowski wrote: >>>> On 12/12/2023 17:40, Ninad Palsule wrote: >>>>> This drop adds following devices in the device tree. >>>>> - EEPROM/VPD >>>>> - Power supplies >>>>> - Humidity, pressure and temperature sensors. >>>>> - Trusted platform module(TPM) chip >>>>> >>>>> Tested: >>>>> This board is tested using the simics simulator. >>>>> >>>>> Signed-off-by: Ninad Palsule >>>>> --- >>>> Don't mix DTS with drivers. DTS and drivers go via different subsystems >>>> and cannot have dependencies, so why DTS is patch #6, then driver #7 and >>>> now again DTS #7? >>> There is a dependency on driver code as patch #8 uses the compatibility >>> string added in driver patch #7.  I have now moved driver patch at the >>> start. Is that ok? OR you are suggesting something else? >> First, there is no dependency. Second, except confusing order anyway DTS >> will go via separate trees. Third, again, there is no dependency. If >> there is, your patchset is broken and this needs to be fixed. Although I >> don't understand how new hardware can depend on driver... it's really odd. > > Thanks for the quick response. > > This board uses the nuvoton TPM device. The tpm devices uses > "nuvoton,npct75x" driver hence we added it in the device tree. If the > driver doesn't have this compatibility string then it won't load. So if > someone tries to use this board then tpm won't work unless the ... and if there is no board it also fails to load. > compatibility string is added in the driver. That is the dependency I am > talking about. This is not a dependency! It's unrelated. Best regards, Krzysztof