linux-kernel - Re: [PATCH v2 3/4] ARM: dts: exynos: Add regulator suspend configuration to Odroid XU3/XU4/HC1 family

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Message-ID: <CANAwSgTFQo8wL5s-djwPXFFOLtTHvRQif6234kFC=23PwMhuEQ@mail.gmail.com>
Date:   Sun, 23 Jun 2019 21:32:12 +0530
From:   Anand Moon <linux.amoon@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Kukjin Kim <kgene@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-samsung-soc@...r.kernel.org,
        Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/4] ARM: dts: exynos: Add regulator suspend
 configuration to Odroid XU3/XU4/HC1 family

Hi Krzysztof,

Thanks for this patch. Please add my

Tested-by: Anand Moon <linux.amoon@...il.com>

[snip]

Could you integrate below small changes into this patch.
with these below changes suspend and resume work correctly at my end.

[1] XU4_suspendresume.patch

As per S2MPS11B PMIC 1.2.1 Regulator (Features)
Fix the min max value for *Buck7* and *Buck8*

-- Buck7 (VDD_1.0V_LDO) 1.5 A (1.2 V to 1.5 V, 12.5 mV step, default on 1.35 V)
-- Buck8 (VDD_1.8V_LDO) 2.5 A (1.8 V to 2.1 V, 12.5 mV step, default on 2.0 V)

Also add suspend-off for *Buck9*
Buck9 internally controls the power of USB hub.
Adding suspend the this node help proper reset of USB hub on Odroid
XU4 / HC1/ XU3
during suspend and resume. Below it the logs from my testing.

[2] https://pastebin.com/pRJJmWL6

Best Regards
-Anand

View attachment "xu4_suspend_resume.txt" of type "text/plain" (9524 bytes)

Download attachment "XU4_suspendresume.patch" of type "application/octet-stream" (1032 bytes)