On Thu, Oct 20, 2016 at 05:15:40PM +0800, zhichang.yuan wrote: > On Hip06, the accesses to LPC peripherals work in an indirect way. A > corresponding LPC driver configure some registers in LPC master at first, then > the real accesses on LPC slave devices are finished by the LPC master, which > is transparent to LPC driver. > This patch implement the relevant driver for Hip06 LPC. Cooperating with > indirect-IO, ipmi messages is in service without any changes on ipmi driver. > > Signed-off-by: zhichang.yuan <yuanzhichang@xxxxxxxxxxxxx> > Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx> > --- > .../arm/hisilicon/hisilicon-low-pin-count.txt | 31 ++ > MAINTAINERS | 8 + > drivers/bus/Kconfig | 8 + > drivers/bus/Makefile | 1 + > drivers/bus/hisi_lpc.c | 501 +++++++++++++++++++++ > 5 files changed, 549 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt > create mode 100644 drivers/bus/hisi_lpc.c > > diff --git a/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt > new file mode 100644 > index 0000000..e681419 > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/hisilicon/hisilicon-low-pin-count.txt > @@ -0,0 +1,31 @@ > +Hisilicon Hip06 low-pin-count device > + Usually LPC controller is part of PCI host bridge, so the legacy ISA ports > + locate on LPC bus can be accessed direclty. But some SoCs have independent > + LPC controller, and access the legacy ports by triggering LPC I/O cycles. > + Hisilicon Hip06 implements this LPC device. > + > +Required properties: > +- compatible: should be "hisilicon,low-pin-count" This should be an SoC specific compatible string. > +- #address-cells: must be 2 which stick to the ISA/EISA binding doc. > +- #size-cells: must be 1 which stick to the ISA/EISA binding doc. > +- reg: base memory range where the register set for this device is mapped. > + > +Note: > + The node name before '@' must be "isa" to represent the binding stick to the > + ISA/EISA binding specification. > + > +Example: > + > +isa@a01b0000 { > + compatible = "hisilicom,low-pin-count"; > + #address-cells = <2>; > + #size-cells = <1>; > + reg = <0x0 0xa01b0000 0x0 0x1000>; > + > + ipmi0: bt@e4 { > + compatible = "ipmi-bt"; > + device_type = "ipmi"; > + reg = <0x01 0xe4 0x04>; > + status = "disabled"; > + }; > +}; -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html