On Mon, Oct 23, 2017 at 9:32 AM, Bin Meng bmeng.cn@gmail.com wrote:
Hi Simon,
On Sun, Oct 22, 2017 at 10:36 PM, Simon Glass sjg@chromium.org wrote:
On 19 October 2017 at 03:20, Bin Meng bmeng.cn@gmail.com wrote:
Some Intel FSP (like Braswell) does SPI lock-down during the call to fsp_notify(INIT_PHASE_BOOT). But before SPI lock-down is done, it's bootloader's responsibility to configure the SPI controller's opcode registers properly otherwise SPI controller driver doesn't know how to communicate with the SPI flash device.
Rather than passively doing the opcode configuration, let's add a simple DTS property "intel,spi-lock-down" and let the driver call the opcode configuration function if required by such FSP.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
drivers/spi/ich.c | 22 ++++++++++++++++++++++ drivers/spi/ich.h | 1 + 2 files changed, 23 insertions(+)
Does this go in a binding file somewhere?
Looks there is no binding file for Intel SPI controller driver. We will need create one.
Reviewed-by: Simon Glass sjg@chromium.org
applied to u-boot-x86, thanks!