[PATCH V6 4/5] LPC: Support the device-tree LPC host on Hip06/Hip07
From: robh@kernel.org (Rob Herring)
Date: 2017-01-27 22:17:11
Also in:
linux-devicetree, linux-pci, linux-serial, lkml
On Tue, Jan 24, 2017 at 03:05:24PM +0800, zhichang.yuan wrote:
The low-pin-count(LPC) interface of Hip06/Hip07 accesses the peripherals in I/O port addresses. This patch implements the LPC host controller driver which perform the I/O operations on the underlying hardware. We don't want to touch those existing peripherals' driver, such as ipmi-bt. So this driver applies the indirect-IO introduced in the previous patch after registering an indirect-IO node to the indirect-IO devices list which will be searched in the I/O accessors. As the I/O translations for LPC children depend on the host I/O registration, we should ensure the host I/O registration is finished before all the LPC children scanning. That is why an arch_init() hook was added in this patch. Signed-off-by: zhichang.yuan <redacted> Signed-off-by: Gabriele Paoloni <redacted> --- .../arm/hisilicon/hisilicon-low-pin-count.txt | 33 ++ MAINTAINERS | 9 + arch/arm64/boot/dts/hisilicon/hip06-d03.dts | 4 + arch/arm64/boot/dts/hisilicon/hip06.dtsi | 14 +
Acked-by: Rob Herring <robh@kernel.org>
drivers/bus/Kconfig | 8 + drivers/bus/Makefile | 1 + drivers/bus/hisi_lpc.c | 599 +++++++++++++++++++++ 7 files changed, 668 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt create mode 100644 drivers/bus/hisi_lpc.c