From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@baylibre.com (Kevin Hilman) Date: Tue, 17 Jan 2017 16:25:23 -0800 Subject: [PATCH] ARM: davinci: da850-evm: fix read access to SPI flash In-Reply-To: <20170117125742.9536-1-fparent@baylibre.com> (Fabien Parent's message of "Tue, 17 Jan 2017 13:57:42 +0100") References: <20170117125742.9536-1-fparent@baylibre.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Fabien Parent writes: > Read access to the SPI flash are broken on da850-evm, i.e. the data > read is not what is actually programmed on the flash. > According to the datasheet for the M25P64 part present on the da850-evm, > if the SPI frequency is higher than 20MHz then the READ command is not > usable anymore and only the FAST_READ command can be used to read data. > > This commit specifies in the DTS that we should use FAST_READ command > instead of the READ command. > > Signed-off-by: Fabien Parent Tested on da850-evm on top of v4.10-rc3. This gets the DT boot functionatliy in line with the legacy (board-file) boot. Tested-by: Kevin Hilman Kevin