From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5FE4149C43; Fri, 23 Aug 2024 09:08:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724404089; cv=none; b=mUHeiY3RWHEvXR7ysmO7zY7qmkiPKs+VV5wzFiCx9rEYHrHfsv13WOjMESGzOmlU2cNUouOfgYwpK6bdxHglvxl2/ieCTrLdxkbbRxRaVEPbN82Ynseo9sdYeBmn7VK5rjRkmL0wLojCC/az4Sj5OdNfSvhq4BZpa3XunpL2A/w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724404089; c=relaxed/simple; bh=Ve2sqD6iFM1UKf+rloPpgtAo7gWk9UfkFY95e3//i/s=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=RJ+RgM9SpbDkDEGKdbvIiG4qlHC+9+nXzWnP00e5mxr8o+QPPg08hg7qW/7RT6Y0yoeyQ9h+gHTqHgETjDWHyc4KpLfTkkfFFaW/t+uV89fHe4LtS4es88Lb0s07AT+1S1+QEOFmQfU5v5NvlTiFZsyjN34BJU8F+G/2J4as9XI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lMDsO8Xk; 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="lMDsO8Xk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53A5FC4AF0B; Fri, 23 Aug 2024 09:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724404088; bh=Ve2sqD6iFM1UKf+rloPpgtAo7gWk9UfkFY95e3//i/s=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=lMDsO8Xkg+vjG2uP+6H2ZjIIT3JzFHH1ZwI1nqWbcVlzEOIsVzDIk88LYoxB0z2xa UgZZizGqAlJfQ3b5mNUN3+sw5oU04G9i/Dj4Nygsz9/P7O6sW1B0H9VDJCOrWIUoqX x9zix5JZ1n59sCQr/gsMEFrXCCwmPulHb9y98TsG4sgv4LZMHmF3mJlMG8MUxwlu0u job095Z+DEmA5ZV2ZZEs+wHQ57yUUKsCoQzmZ3dEHzb1ArxKsH/hQeaCHEcgsXtHzq ndXd3kv/xo+uX8jPtsp5+hPllBmgjfHDgzQdNvMU+HnX9O2OWJOxGmbn7YA1eVrSZh b4os0KwMC/EUA== Message-ID: Date: Fri, 23 Aug 2024 11:07:59 +0200 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 v2 01/16] dt-bindings: dma: qcom,bam: Add bam pipe lock To: Md Sadre Alam , vkoul@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org, konradybcio@kernel.org, thara.gopinath@gmail.com, herbert@gondor.apana.org.au, davem@davemloft.net, gustavoars@kernel.org, u.kleine-koenig@pengutronix.de, kees@kernel.org, agross@kernel.org, linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org Cc: quic_srichara@quicinc.com, quic_varada@quicinc.com, quic_utiwari@quicinc.com References: <20240815085725.2740390-1-quic_mdalam@quicinc.com> <20240815085725.2740390-2-quic_mdalam@quicinc.com> <0a2b884b-bd28-428e-be12-8fef4fdfd278@kernel.org> <6365b444-f552-4b13-c73b-00ba04ec1e62@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 22/08/2024 13:45, Md Sadre Alam wrote: > > > On 8/22/2024 11:57 AM, Krzysztof Kozlowski wrote: >> On 21/08/2024 18:34, Md Sadre Alam wrote: >>> >>> >>> On 8/17/2024 2:38 PM, Krzysztof Kozlowski wrote: >>>> On 15/08/2024 10:57, Md Sadre Alam wrote: >>>>> BAM having pipe locking mechanism. The Lock and Un-Lock bit >>>>> should be set on CMD descriptor only. Upon encountering a >>>>> descriptor with Lock bit set, the BAM will lock all other >>>>> pipes not related to the current pipe group, and keep >>>>> handling the current pipe only until it sees the Un-Lock >>>>> set. >>>> >>>> Please wrap commit message according to Linux coding style / submission >>>> process (neither too early nor over the limit): >>>> https://elixir.bootlin.com/linux/v6.4-rc1/source/Documentation/process/submitting-patches.rst#L597 >>> Ok , will update in next patch. >>>> >>>>> >>>>> Signed-off-by: Md Sadre Alam >>>>> --- >>>>> >>>>> Change in [v2] >>>>> >>>>> * Added initial support for dt-binding >>>>> >>>>> Change in [v1] >>>>> >>>>> * This patch was not included in [v1] >>>>> >>>>> Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml | 8 ++++++++ >>>>> 1 file changed, 8 insertions(+) >>>>> >>>>> diff --git a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml >>>>> index 3ad0d9b1fbc5..91cc2942aa62 100644 >>>>> --- a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml >>>>> +++ b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml >>>>> @@ -77,6 +77,12 @@ properties: >>>>> Indicates that the bam is powered up by a remote processor but must be >>>>> initialized by the local processor. >>>>> >>>>> + qcom,bam_pipe_lock: >>>> >>>> Please follow DTS coding style. >>> Ok >>>> >>>>> + type: boolean >>>>> + description: >>>>> + Indicates that the bam pipe needs locking or not based on client driver >>>>> + sending the LOCK or UNLOK bit set on command descriptor. >>>> >>>> You described the desired Linux feature or behavior, not the actual >>>> hardware. The bindings are about the latter, so instead you need to >>>> rephrase the property and its description to match actual hardware >>>> capabilities/features/configuration etc. >>> Ok, will update in next patch. >>>> >>>>> + >>>>> reg: >>>>> maxItems: 1 >>>>> >>>>> @@ -92,6 +98,8 @@ anyOf: >>>>> - qcom,powered-remotely >>>>> - required: >>>>> - qcom,controlled-remotely >>>>> + - required: >>>>> + - qcom,bam_pipe_lock >>>> >>>> Why is it here? What do you want to achieve? >>> This property added to achieve locking/unlocking >>> of BAM pipe groups for mutual exclusion of resources >>> that can be used across multiple EE's >> >> This explains me nothing. I am questioning the anyOf block. Why this is >> the fourth method of controlling BAM? Anyway, if it is, then explain >> this in commit msg. > This is the BAM property for locking/unlocking the BAM pipes.That's > why I kept in anyOf block. You keep repeating the same. It's like poking me with the same comment till I agree. I am done with this. NAK. Provide proper rationale. Best regards, Krzysztof