Messages in this thread | | | Date | Wed, 15 Jul 2015 05:07:46 -0700 | From | Tony Lindgren <> | Subject | Re: [PATCH v2 3/3] ARM: dts: dra7: Add syscon-pllreset syscon to SATA PHY |
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* Kishon Vijay Abraham I <kishon@ti.com> [150715 04:24]: > Hi Roger, > > On Tuesday 02 June 2015 02:40 PM, Roger Quadros wrote: > > This register is required to be passed to the SATA PHY driver > > to workaround errata i783 (SATA Lockup After SATA DPLL Unlock/Relock). > > > > Signed-off-by: Roger Quadros <rogerq@ti.com> > > Signed-off-by: Sekhar Nori <nsekhar@ti.com> > > --- > > arch/arm/boot/dts/dra7.dtsi | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi > > index f03a091..260f300 100644 > > --- a/arch/arm/boot/dts/dra7.dtsi > > +++ b/arch/arm/boot/dts/dra7.dtsi > > @@ -1135,6 +1135,7 @@ > > ctrl-module = <&omap_control_sata>; > > clocks = <&sys_clkin1>, <&sata_ref_clk>; > > clock-names = "sysclk", "refclk"; > > + syscon-pllreset = <&dra7_ctrl_core 0x3fc>; > > I think all users of syscon should be made child node of scm_conf. Tony and > Tero, is that right? > > If so, then we might have to modify the driver too.
Yeah there should not be much need to use syscon outside scm_conf area and for I2C devices. If there's some other misc register area in dra7 in addition to scm_conf then it might make sense to use it.
But in general, for the SCM registers, just a normal loadable kernel driver module doing of_ioremap on a dedicated range of registers is always a better option :)
Regrds,
Tony
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