Commit 0f89ffef authored Jan 04, 2018 by Mika Westerberg Committed by Lee Jones Jan 08, 2018

mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake

Just to be on the safe side, don't touch the bit. If write access to the
flash chip is needed, the BIOS needs to enable it explicitly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

parent 0c384fc8

drivers/mfd/lpc_ich.c

+0 −5

Original line number	Diff line number	Diff line
		@@ -1143,11 +1143,6 @@ static int lpc_ich_init_spi(struct pci_dev *dev)
		res->end = res->start + SPIBASE_APL_SZ - 1;

		pci_bus_read_config_dword(bus, spi, BCR, &bcr);
		if (!(bcr & BCR_WPD)) {
		bcr \|= BCR_WPD;
		pci_bus_write_config_dword(bus, spi, BCR, bcr);
		pci_bus_read_config_dword(bus, spi, BCR, &bcr);
		}
		info->writeable = !!(bcr & BCR_WPD);
		}