From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Sat, 3 Nov 2018 20:05:24 +0100 Subject: [PATCH 1/2] DT: marvell,mmp2: fix TWSI2 In-Reply-To: <20180917113947.12626-2-lkundrak@v3.sk> References: <20180917113947.12626-1-lkundrak@v3.sk> <20180917113947.12626-2-lkundrak@v3.sk> Message-ID: <20181103190524.GC31179@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon 2018-09-17 13:39:46, Lubomir Rintel wrote: > Marvell keeps their MMP2 datasheet secret, but there are good clues > that TWSI2 is not on 0xd4025000 on that platform, not does it use > IRQ 58. In fact, the IRQ 58 on MMP2 seems to be a signal processor: > > arch/arm/mach-mmp/irqs.h:#define IRQ_MMP2_MSP 58 > > I'm taking a somewhat educated guess that is probably a copy & paste > error from PXA168 or PXA910 and that the real controller in fact hides > at address 0xd4031000 and uses an interrupt line multiplexed via IRQ 17. > > I'm also copying some properties from TWSI1 that were missing or > incorrect. > > Tested on a OLPC XO 1.75 machine, where the RTC is on TWSI2. > > Cc: Eric Miao > Cc: Haojian Zhuang > Cc: Rob Herring > Cc: Mark Rutland > Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek > status = "disabled"; > }; > > - twsi2: i2c at d4025000 { > + twsi2: i2c at d4031000 { > compatible = "mrvl,mmp-twsi"; > - reg = <0xd4025000 0x1000>; > - interrupts = <58>; > + reg = <0xd4031000 0x1000>; > + interrupt-parent = <&intcmux17>; > + interrupts = <0>; > clocks = <&soc_clocks MMP2_CLK_TWSI1>; > resets = <&soc_clocks MMP2_CLK_TWSI1>; > + #address-cells = <1>; > + #size-cells = <0>; > status = "disabled"; > }; > -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: