Messages in this thread | | | Date | Thu, 19 Jun 2014 18:53:30 +0530 | From | Kishon Vijay Abraham I <> | Subject | Re: [PATCH v2 10/18] ARM: dts: dra7xx-clocks: Add missing 32khz clocks used for PHY |
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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** ?
Thanks Kishon
> > -Tero > >> >> Cc: Tony Lindgren <tony@atomide.com> >> Cc: Rajendra Nayak <rnayak@ti.com> >> Cc: Tero Kristo <t-kristo@ti.com> >> Cc: Paul Walmsley <paul@pwsan.com> >> Cc: Tony Lindgren <tony@atomide.com> >> Cc: Rob Herring <robh+dt@kernel.org> >> Cc: Pawel Moll <pawel.moll@arm.com> >> Cc: Mark Rutland <mark.rutland@arm.com> >> Cc: Kumar Gala <galak@codeaurora.org> >> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> >> --- >> 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>; >> >
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