From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philipp Tomsich Date: Tue, 02 Oct 2018 16:00:55 +0200 Subject: [U-Boot] [U-Boot, 3/4] rockchip: rk3188: add u-boot-specific mmc properties In-Reply-To: <20180921085948.26975-4-heiko@sntech.de> References: <20180921085948.26975-4-heiko@sntech.de> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de > The dwmmc controllers on rk3188 do not have idma support, so need to > use the fifo-mode and it my tests they became confused and stopped > working if the frequency was to high. > > While I only tested in somewhat bigger steps, 32MHz for example > hung the controller, while reducing it to 16MHz worked just fine > and is reasonably fast to load a kernel from mmc. > > Signed-off-by: Heiko Stuebner > Reviewed-by: Philipp Tomsich > Acked-by: Philipp Tomsich > --- > arch/arm/dts/rk3188-radxarock-u-boot.dtsi | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > Applied to u-boot-rockchip, thanks!