Hello, This small patchset adds the reset functionality to the I2C and SPI peripherals on HI6220 SoC from HiSilicon. Those peripherals needs to be taken out of reset before being used. But earlier we were depending on the bootloader to do the job but as suggested by Daniel Thompson, a more cleaner approach would be to handle the reset in corresponding drivers.
Hence, one of the patch adds reset properties to the I2C and SPI nodes and the other one adds missing reset functionality to the AMBA Primecell bus driver. Because the AMBA devices are being accessed before the driver probe (reading pid and cid values), we need to deassert the reset line in the bus driver itself just before the read. I'd expect the patch 1 to go via arm tree and patch 2 via hisi tree. Thanks, Mani Manivannan Sadhasivam (2): amba: Take device out of reset before reading pid and cid values arm64: dts: hisilicon: Add reset properties for HI6220 I2C and SPI arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 8 ++++++++ drivers/amba/bus.c | 9 +++++++++ 2 files changed, 17 insertions(+) -- 2.17.1