Re: [PATCH 08/10] mtd: flash-sam: Bindings for Juniper's SAM FPGA flash
From: Rob Herring <hidden>
Date: 2016-10-10 20:07:09
Also in:
linux-gpio, linux-i2c, linux-watchdog, lkml, netdev
gOn Fri, Oct 07, 2016 at 06:18:36PM +0300, Pantelis Antoniou wrote:
quoted hunk ↗ jump to hunk
From: Georgi Vlaev <redacted> Add binding document for Junipers Flash IP block present in the SAM FPGA on PTX series of routers. Signed-off-by: Georgi Vlaev <redacted> [Ported from Juniper kernel] Signed-off-by: Pantelis Antoniou <pantelis.antoniou-OWPKS81ov/FWk0Htik3J/w@public.gmane.org> --- .../devicetree/bindings/mtd/flash-sam.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/flash-sam.txtdiff --git a/Documentation/devicetree/bindings/mtd/flash-sam.txt b/Documentation/devicetree/bindings/mtd/flash-sam.txt new file mode 100644 index 0000000..bdf1d78 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/flash-sam.txt@@ -0,0 +1,31 @@ +Flash device on a Juniper SAM FPGA + +These flash chips are found in the PTX series of Juniper routers. + +They are regular CFI compatible (Intel or AMD extended) flash chips with +some special write protect/VPP bits that can be controlled by the machine's +system controller.
And where's the description of the sys ctrlr?
+
+Required properties:
+- compatible : must be "jnx,flash-sam"
+
+Optional properties:
+- reg : memory address for the flash chip, note that this is not
+required since usually the device is a subdevice of the SAM MFD
+driver which fills in the register fields.
+
+For the rest of the properties, see mtd-physmap.txt.
+
+The device tree may optionally contain sub-nodes describing partitions of the
+address space. See partition.txt for more detail.
+
+Example:
+
+flash_sam {
+ compatible = "jnx,flash-sam";
+ partition@0 {This should have a heirarchy of a controller node, a flash child node, partitions child node, and partition child nodes.
+ reg = <0x0 0x400000>; + label = "pic0-golden"; + read-only; + }; +}; -- 1.9.1
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