From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Shazad Hussain <quic_shazhuss@quicinc.com>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Sebastian Reichel <sre@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Parikshit Pareek <quic_ppareek@quicinc.com>,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: Re: [PATCH 1/4] arm64: dts: qcom: sa8775p: pmic: remove the PON modes
Date: Tue, 18 Apr 2023 09:04:52 +0200 [thread overview]
Message-ID: <6d24511a-69dd-e99c-09d2-53cc3e80bd5e@linaro.org> (raw)
In-Reply-To: <792e1f22-c3eb-80c7-0600-b478b3764f7c@quicinc.com>
On 18/04/2023 06:39, Shazad Hussain wrote:
>
>
> On 4/13/2023 9:42 PM, Krzysztof Kozlowski wrote:
>> On 13/04/2023 15:17, Bartosz Golaszewski wrote:
>>> From: Parikshit Pareek <quic_ppareek@quicinc.com>
>>>
>>> Remove the power on reasons with reboot from the pmm8654au_0_pon.
>>> Instead, the PoN reaons should be part of different sdam_0 mode, to
>>
>> typo: reasons
>>
>>> be interoduced.
>>
>> introduced
>>
>> Anyway it does not say why. Are these power reasons not correct?
>>
>
> Hi Krzysztof,
> Since sm8350 the PMIC PON peripheral was split into PON_HLOS and PON_PBS
> to avoid security concerns with HLOS APPS being able to trigger a PMIC
> WARM_RESET unilaterally. When the split occurred, the spare registers
> ended up in PON_PBS, not PON_HLOS. Thus at that time, we moved to using
> an SDAM register for Linux “reboot reason” configuration. And bootloader
> also SDAM register to get these reboot region data to get into
> bootloader/edl, so to have this working we need to use SDAM.
The explanation of their correctness should be in commit msg.
Best regards,
Krzysztof
next prev parent reply other threads:[~2023-04-18 7:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-13 13:17 [PATCH 0/4] arm64: qcom: fix the reboot reason handling on sa8775p Bartosz Golaszewski
2023-04-13 13:17 ` [PATCH 1/4] arm64: dts: qcom: sa8775p: pmic: remove the PON modes Bartosz Golaszewski
2023-04-13 16:12 ` Krzysztof Kozlowski
2023-04-18 4:39 ` Shazad Hussain
2023-04-18 7:04 ` Krzysztof Kozlowski [this message]
2023-04-18 9:43 ` Konrad Dybcio
2023-04-18 9:54 ` Shazad Hussain
2023-04-13 13:17 ` [PATCH 2/4] arm64: defconfig: enable building the nvmem-reboot-mode module Bartosz Golaszewski
2023-04-16 15:16 ` Krzysztof Kozlowski
2023-04-17 14:38 ` Arnd Bergmann
2023-04-13 13:17 ` [PATCH 3/4] dt-bindings: power: reset: convert nvmem-reboot-mode bindings to YAML Bartosz Golaszewski
2023-04-16 15:20 ` Krzysztof Kozlowski
2023-04-13 13:17 ` [PATCH 4/4] arm64: dts: qcom: sa8775p: pmic: add the sdam_0 node Bartosz Golaszewski
2023-04-13 16:15 ` Krzysztof Kozlowski
2023-04-17 14:42 ` [PATCH 0/4] arm64: qcom: fix the reboot reason handling on sa8775p Arnd Bergmann
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