Re: [PATCH v2 10/18] ARM: dts: dra7xx-clocks: Add missing 32khz clocks used for PHY
From: Tero Kristo
Date: Thu Jun 19 2014 - 09:26:57 EST
On 06/19/2014 04:23 PM, Kishon Vijay Abraham I wrote:
Hi Tero,
On Thursday 19 June 2014 04:46 PM, Tero Kristo wrote:
On 05/29/2014 09:38 AM, Kishon Vijay Abraham I wrote:
Added missing 32khz clock used by PCIe PHY.
The documention for this node can be found @ ../bindings/clock/ti/gate.txt.
You can drop the node documentation ref, and rather add a TRM reference about
hardware details. Other than that, looks good to me.
You mean something like why 32KHz clock is used (**PRCM.PCIE_32K_GFCLK (based
on PRM.SYS_32K) for debounce and wakeup logic inside the PCIe1_PHY_RX**)? Or
something like **Figure 26-19. PCIe PHY Subsystem Integration of DRA TRM vE
shows how 32KHz clock is being used** ?
Just having a reference to the TRM version used and if you can provide a
link to a figure or page where the clock integration is described should
be good.
-Tero
Thanks
Kishon
-Tero
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Rajendra Nayak <rnayak@xxxxxx>
Cc: Tero Kristo <t-kristo@xxxxxx>
Cc: Paul Walmsley <paul@xxxxxxxxx>
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
arch/arm/boot/dts/dra7xx-clocks.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/dra7xx-clocks.dtsi
b/arch/arm/boot/dts/dra7xx-clocks.dtsi
index 44993ec..e1bd052 100644
--- a/arch/arm/boot/dts/dra7xx-clocks.dtsi
+++ b/arch/arm/boot/dts/dra7xx-clocks.dtsi
@@ -1165,6 +1165,14 @@
reg = <0x021c>, <0x0220>;
};
+ optfclk_pciephy_32khz: optfclk_pciephy_32khz@4a0093b0 {
+ compatible = "ti,gate-clock";
+ clocks = <&sys_32k_ck>;
+ #clock-cells = <0>;
+ reg = <0x13b0>;
+ ti,bit-shift = <8>;
+ };
+
optfclk_pciephy_div: optfclk_pciephy_div@4a00821c {
compatible = "ti,divider-clock";
clocks = <&apll_pcie_ck>;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/