From: Wolfram Sang <wsa@the-dreams.de> To: Lee Jones <lee.jones@linaro.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org>, alokc@codeaurora.org, agross@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] i2c: qcom-geni: Provide an option to select FIFO processing Date: Thu, 5 Sep 2019 15:37:43 +0200 [thread overview] Message-ID: <20190905133743.GE1157@kunai> (raw) In-Reply-To: <20190905093444.GE26880@dell> [-- Attachment #1: Type: text/plain, Size: 1279 bytes --] > > So, are there investigations running why this reboot happens? > > Yes, but they have been running for months, literally. I see. This is good to know. Just so I also know where we are with this. > > Which is a clear disadvantage of that solution. It won't fix older > > kernels. My suggestion above should fix them, too. > > Not sure how this is possible. Unless you mean LTS? Why not? Using of_machine_is_compatible() makes the patch 100% self contained (no extra binding needed). It will work wherever the machine description fits. > > Unless we know why the reboot happens on your platform, I'd be careful > > with saying "work obviously well" on other platforms. > > Someone must have tested it? Surely ... ;) It seems to work mostly, I won't deny that. But we don't know if the buggy situation can be triggered on these platforms as well by something else later. We just don't know. > > My suggestion: > > > > For 5.3, use of_machine_is_compatible() and we backport that. For later, > > try to find out the root cause and fix it. If that can't be done, try to > > set up a generic "disable-dma" property and use it. > > > > What do you think about that? > > Sounds okay to me. Let me code that up. Glad you like it. [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 833 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <wsa@the-dreams.de> To: Lee Jones <lee.jones@linaro.org> Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, agross@kernel.org, robh+dt@kernel.org, Bjorn Andersson <bjorn.andersson@linaro.org>, alokc@codeaurora.org, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 1/2] i2c: qcom-geni: Provide an option to select FIFO processing Date: Thu, 5 Sep 2019 15:37:43 +0200 [thread overview] Message-ID: <20190905133743.GE1157@kunai> (raw) In-Reply-To: <20190905093444.GE26880@dell> [-- Attachment #1.1: Type: text/plain, Size: 1279 bytes --] > > So, are there investigations running why this reboot happens? > > Yes, but they have been running for months, literally. I see. This is good to know. Just so I also know where we are with this. > > Which is a clear disadvantage of that solution. It won't fix older > > kernels. My suggestion above should fix them, too. > > Not sure how this is possible. Unless you mean LTS? Why not? Using of_machine_is_compatible() makes the patch 100% self contained (no extra binding needed). It will work wherever the machine description fits. > > Unless we know why the reboot happens on your platform, I'd be careful > > with saying "work obviously well" on other platforms. > > Someone must have tested it? Surely ... ;) It seems to work mostly, I won't deny that. But we don't know if the buggy situation can be triggered on these platforms as well by something else later. We just don't know. > > My suggestion: > > > > For 5.3, use of_machine_is_compatible() and we backport that. For later, > > try to find out the root cause and fix it. If that can't be done, try to > > set up a generic "disable-dma" property and use it. > > > > What do you think about that? > > Sounds okay to me. Let me code that up. Glad you like it. [-- Attachment #1.2: signature.asc --] [-- Type: application/pgp-signature, Size: 833 bytes --] [-- Attachment #2: Type: text/plain, Size: 176 bytes --] _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-09-05 13:37 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-04 11:36 [PATCH 1/2] i2c: qcom-geni: Provide an option to select FIFO processing Lee Jones 2019-09-04 11:36 ` Lee Jones 2019-09-04 11:36 ` [PATCH 2/2] dt-bindings: soc: qcom: Provide option to select FIFO mode Lee Jones 2019-09-04 11:36 ` Lee Jones 2019-09-04 11:58 ` Vinod Koul 2019-09-04 11:58 ` Vinod Koul 2019-09-04 11:56 ` [PATCH 1/2] i2c: qcom-geni: Provide an option to select FIFO processing Vinod Koul 2019-09-04 11:56 ` Vinod Koul 2019-09-04 12:18 ` Lee Jones 2019-09-04 12:18 ` Lee Jones 2019-09-04 11:58 ` Vinod Koul 2019-09-04 11:58 ` Vinod Koul 2019-09-04 20:35 ` Bjorn Andersson 2019-09-04 20:35 ` Bjorn Andersson 2019-09-04 21:23 ` Wolfram Sang 2019-09-04 21:23 ` Wolfram Sang 2019-09-05 7:11 ` Lee Jones 2019-09-05 7:11 ` Lee Jones 2019-09-05 9:16 ` Wolfram Sang 2019-09-05 9:16 ` Wolfram Sang 2019-09-05 9:34 ` Lee Jones 2019-09-05 9:34 ` Lee Jones 2019-09-05 13:37 ` Wolfram Sang [this message] 2019-09-05 13:37 ` Wolfram Sang
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