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smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DuWQD75t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="DuWQD75t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8BC9AC4CED2; Mon, 2 Dec 2024 07:19:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733123972; bh=/tlgtK7JjfxgaGxdUXckjbndy/MvCZ5JS02jgL2F4tY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=DuWQD75tMUHZxM2tvrZXS3O4zFJz9l9V9IazfY1a3YWdYlf7+72kel91ViGtVCodF yoiWqR1VXnaemtZbtaiBkucEwrFeCXoaUerGCOgc4MxJaq834fBN2e9nm69caMycNY J+uqP7RZeYQKtGuN7hY4HNM6yUDdYgrWX74f6OzeHbQP2QH1lvyz4HNY1r2dtOanrx FkVUuxmZc5uoU6gZ7pUKgzrq1lnsLPkFfFap4gdV3raMUtCNTeYAezDfYLLtEMnOTi 0TnAYooAJjtw6Hv4HIdhivf42dzjCtyFxc8V47cSgBgOuTNBT7/aD/lkOtRpq34bqx 6oh4m0LDtEvvA== Message-ID: Date: Mon, 2 Dec 2024 08:19:23 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/4] dt-bindindgs: i2c: qcom,i2c-geni: Document shared flag To: Mukesh Kumar Savaliya , konrad.dybcio@linaro.org, andersson@kernel.org, andi.shyti@kernel.org, linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, conor+dt@kernel.org, agross@kernel.org, devicetree@vger.kernel.org, vkoul@kernel.org, linux@treblig.org, dan.carpenter@linaro.org, Frank.Li@nxp.com, konradybcio@kernel.org, bryan.odonoghue@linaro.org, krzk+dt@kernel.org, robh@kernel.org Cc: quic_vdadhani@quicinc.com References: <20241129144357.2008465-1-quic_msavaliy@quicinc.com> <20241129144357.2008465-2-quic_msavaliy@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 02/12/2024 05:00, Mukesh Kumar Savaliya wrote: > Hi Krzysztof, > > On 11/29/2024 8:44 PM, Krzysztof Kozlowski wrote: >> On 29/11/2024 15:43, Mukesh Kumar Savaliya wrote: >>> Adds qcom,shared-se flag usage. Use this flag when I2C serial controller >>> needs to be shared in multiprocessor system(APPS,Modem,ADSP) environment. >>> >>> SE(Serial Engine HW controller acting as protocol master controller) is an >>> I2C controller. Basically a programmable SERDES(serializer/deserializer) >>> coupled with data DMA entity, capable in handling a bus protocol, and data >>> moves to/from system memory. >>> >>> Two clients from different processors can share an I2C controller for same >>> slave device OR their owned slave devices. Assume I2C Slave EEPROM device >>> connected with I2C controller. Each client from ADSP SS and APPS Linux SS >>> can perform i2c transactions. >>> >>> Transfer gets serialized by Lock TRE + DMA xfer + Unlock TRE at HW level. >>> >>> Signed-off-by: Mukesh Kumar Savaliya >>> --- >>> .../devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml | 8 ++++++++ >>> 1 file changed, 8 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml >>> index 9f66a3bb1f80..88682a333399 100644 >>> --- a/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml >>> +++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-geni-qcom.yaml >>> @@ -60,6 +60,14 @@ properties: >>> power-domains: >>> maxItems: 1 >>> >>> + qcom,shared-se: >>> + description: True if I2C controller is shared between two or more system processors. >>> + SE(Serial Engine HW controller working as protocol master controller) is an >>> + I2C controller. Basically, a programmable SERDES(serializer/deserializer) >>> + coupled with data DMA entity, capable in handling a bus protocol, and data >>> + moves to/from system memory. >> I replied why I NAK it. You did not really address my concerns, but >> replied with some generic statement. After that generic statement you >> gave me exactly 0 seconds to react and you sent v5. >> > Sorry for 0 seconds, i thought of addressing comment and uploading it > new patch as i wanted to explain SE. whatever i have added for SE > explanation is in qualcomm hardware programming guide document. >> Really 0 seconds to respond to your comment, while you give yourself >> days to respond to my comments. >> >> This is not how it works. >> > Sure, let me first conclude here what exactly should be done. >> NAK >> >> Implement previous feedback. Don't send any new versions before you >> understand what you have to do and get some agreement with reviewers. >> > Sure, this is definitely a good way. what did i do for previous comment ? > I have opened SE and expanded, explained. > > which statement or explanation should i rephrase ? Is it description > statement from this yaml file ? Could you please suggested better word > instead of shared-se if this flag name is not suitable ? > > I could not get this ask - > "There are few of such flags already and there are some patches adding > it in different flavors." Come with one flag or enum, if needed, covering all your cases like this. Best regards, Krzysztof