Hi Fabio, Am 19.06.2017 um 08:06 schrieb Oleksij Rempel: > On Fri, Jun 09, 2017 at 04:59:00PM +0200, Stefan Wahren wrote: > Hi Stefan, > >> Hi Oleksij, >> >> Am 09.06.2017 um 14:57 schrieb Oleksij Rempel: >>> Documentation bindings for the Low Power General Purpose Register >>> available on i.MX6 SoCs in the Secure Non-Volatile Storage. >>> >>> Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> >>> --- >>> .../devicetree/bindings/nvmem/snvs-lpgpr.txt | 19 +++++++++++++++++++ >>> 1 file changed, 19 insertions(+) >>> create mode 100644 Documentation/devicetree/bindings/nvmem/snvs-lpgpr.txt >>> >>> diff --git a/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.txt b/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.txt >>> new file mode 100644 >>> index 000000000000..21910fb3159f >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/nvmem/snvs-lpgpr.txt >>> @@ -0,0 +1,19 @@ >>> +Device tree bindings for Low Power General Purpose Register found in i.MX6Q/D >>> +Secure Non-Volatile Storage. >>> + >>> +This DT node should be represented as a sub-node of a "syscon", >>> +"simple-mfd" node. >>> + >>> +Required properties: >>> +- compatible: should be: >>> + "fsl,imx6q-snvs-lpgpr" for Freescale i.MX6Q/D/DL/S >>> + >>> +Example: >>> +snvs: snvs@020cc000 { >>> + compatible = "fsl,sec-v4.0-mon", "syscon", "simple-mfd"; >>> + reg = <0x020cc000 0x4000>; >>> + >>> + snvs_lpgpr: snvs-lpgpr { >>> + compatible = "fsl,imx6q-snvs-lpgpr"; >> according to the reference manual at least the clock "lp_ipg_clk_s" is >> required for register R/W access. >> So it should be added to the binding and enabled by the driver. > Hm... > Non of current SNVS drives use, set or defines *_ipg_clk_s. I can't find > in the docs how can I control this clocks. > lp_ipg_clk_s and hp_ipg_clk_s depend on ipg_clk_root, which seems to be > not gated. So, it is always on. Or do I miss something. > do you know how the clock "lp_ipg_clk_s" should be handled? Thanks Stefan -- 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