[PATCH v3 8/9] eeprom: qfprom: Add bindings for qfprom

Bjorn Andersson
2015-03-25T00:28:33Z

On Tue, Mar 24, 2015 at 11:31 PM, Srinivas Kandagatla
<srinivas.kandagatla@linaro.org> wrote:
> This patch adds bindings for qfprom found in QCOM SOCs. QFPROM driver
> is based on simple eeprom framework.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
> .../devicetree/bindings/eeprom/qfprom.txt | 23 ++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/eeprom/qfprom.txt
>
> diff --git a/Documentation/devicetree/bindings/eeprom/qfprom.txt b/Documentation/devicetree/bindings/eeprom/qfprom.txt
> new file mode 100644
> index 0000000..d5baed6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/eeprom/qfprom.txt
> @@ -0,0 +1,23 @@
> += Qualcomm QFPROM device tree bindings =
> +
> +This binding is intended to represent QFPROM which is found in most QCOM SOCs.
> +
> +Required properties:
> +- compatible: should be "qcom,qfprom"
> +- reg: Should contain registers location and length
> +
> += Data cells =
> +Are child nodes of qfprom, bindings of which as described in
> +bindings/eeprom/eeprom.txt
> +
> +Example:
> +
> + qfprom: qfprom at 00700000 {
> + compatible = "qcom,qfprom";
> + reg = <0x00700000 0x1000>;

The qfprom block starts at 0x700000 and is 0x8000 long.

The registers at the beginning of this block are raw R/W fuse bits and
should not be read directly. Instead there is an ecc corrected shadow
copy of these registers at 0x4000.

> + ...
> + /* Data cells */
> + tsens_calibration: calib at 404 {
> + reg = <0x404 0x10>;
> + };
> + };

Regards,
Bjorn