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Date: Tue, 28 Jul 2020 15:12:21 +0100 From: Jon Hunter <jonathanh@...dia.com> To: Aniruddha Rao <anrao@...dia.com>, <adrian.hunter@...el.com>, <ulf.hansson@...aro.org>, <thierry.reding@...il.com>, <p.zabel@...gutronix.de> CC: <linux-mmc@...r.kernel.org>, <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] mmc: tegra: Add Runtime PM callbacks On 27/07/2020 13:47, Aniruddha Rao wrote: > Add runtime suspend/resume callbacks to save power > when the bus is not in use. > In runtime suspend > - Turn off the SDMMC host CAR clock. > - Turn off the trimmer/DLL circuit(BG) power supply(VREG). > - Turn off the SDMMC host internal clocks. > > Re-enable all the disabled clocks/regulators in runtime resume. > > Signed-off-by: Aniruddha Rao <anrao@...dia.com> This patch is causing a boot regression on Tegra20 Ventana. Other boards appear to be booting fine, but this is breaking something for Tegra20. The bootlogs don't appear to show any particular crash, but I see a hang when initialising the sdhci controllers. Cheers Jon -- nvpublic
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