From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Stuebner Subject: Re: [PATCH] ARM: dts: add rk3288-firefly-reload Date: Sun, 07 Aug 2016 16:44:58 +0200 Message-ID: <1815189.oGy6GHMbyM@phil> References: <1549971.ctkvOGm2xW@diego> <2868781.4x2gJCRbLH@diego> <413ebccd-e8d6-1401-3065-f9a63b4d66e6@rock-chips.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Return-path: In-Reply-To: <413ebccd-e8d6-1401-3065-f9a63b4d66e6-TNX95d0MmH7DzftRWevZcw@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Shawn Lin Cc: Randy Li , mark.rutland-5wv7dgnIgG8@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html