From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752463AbcHIJ27 (ORCPT ); Tue, 9 Aug 2016 05:28:59 -0400 Received: from mail-wm0-f44.google.com ([74.125.82.44]:38512 "EHLO mail-wm0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751454AbcHIJ2z convert rfc822-to-8bit (ORCPT ); Tue, 9 Aug 2016 05:28:55 -0400 MIME-Version: 1.0 In-Reply-To: <1815189.oGy6GHMbyM@phil> References: <1549971.ctkvOGm2xW@diego> <2868781.4x2gJCRbLH@diego> <413ebccd-e8d6-1401-3065-f9a63b4d66e6@rock-chips.com> <1815189.oGy6GHMbyM@phil> From: =?UTF-8?B?6ZmI6LGq?= Date: Tue, 9 Aug 2016 17:28:53 +0800 Message-ID: Subject: Re: [PATCH] ARM: dts: add rk3288-firefly-reload To: Heiko Stuebner Cc: Shawn Lin , Randy Li , mark.rutland@arm.com, devicetree@vger.kernel.org, linux@armlinux.org.uk, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2016-08-07 22:44 GMT+08:00 Heiko Stuebner : > Hi Shawn, > > Am Sonntag, 7. August 2016, 11:40:21 schrieb Shawn Lin: >> On 2016/7/19 3:46, Heiko Stübner wrote: >> > Am Montag, 18. Juli 2016, 23:32:32 schrieb Randy Li: >> >> The Firefly RK3288 Reload is a combination Firefly rk3288 core board >> >> with the Reload baseboard. Add a dtsi for the Firefly rk3288 core >> >> which can be included into the dts for the various baseboards >> >> in the future and dts for Reload base board. >> >> >> >> Currently supported are serial console, wired networking, eMMC and >> >> SD storage, SPFIF, IR receiver, LEDs, SDIO wifi and USB. But only >> >> the OTG could work on the host mode now, the other USB host can't >> >> work now, additional patches are required. >> >> >> >> Signed-off-by: Randy Li >> >> Acked-by: Rob Herring >> > >> > applied [0], after some minor reordering - please double check. >> > >> > Also, while the branch is named 4.8 this will only go into 4.9, as the >> > merge- window supposedly opens on the weekend. >> >> Sorry for the noise here:), but I find there is some mmc stuff >> which confuse me. Maybe Randy could elaborate more? >> >> Your sdmmc claims to support UHS-I mode like sd-uhs-sdr104, etc, which >> will ask dw_mmc to switch vqmmc from 3V3 to 1V8 after sending CMD11. >> >> But the vqmmc is vccio_sd which is fixed as 3V3? :) > > so far we have only been able to achieve UHS speeds on devices based on the > rk808 pmic (I had sucess on veyron and popmetal). The act8846-based boards > seem to have some issue when trying to do the switch to 1.8V, resulting in > mmc errors and the mmc-core switching back to 3.3V. > > I think this might be caused by a bug in the act8846 driver or some dts > mistake. But so far nobody had the time and enthusiasm to investigate :-) > > > Heiko Hi all, sdcard-supply must be specifed in io-domains node to enable uhs. io-domains { compatible = "rockchip,rk3288-io-voltage-domain"; rockchip,grf = <&grf>; sdcard-supply = <&vccio_sd>; wifi-supply = <&vcc_18>; };