| From 84360e96153d75fd35ce04bbdf9879d83cb66673 Mon Sep 17 00:00:00 2001 |
| From: Lubomir Rintel <lkundrak@v3.sk> |
| Date: Wed, 28 Nov 2018 18:53:10 +0100 |
| Subject: ARM: dts: mmp2: fix TWSI2 |
| |
| [ Upstream commit 1147e05ac9fc2ef86a3691e7ca5c2db7602d81dd ] |
| |
| 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. |
| |
| Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> |
| Tested-by: Pavel Machek <pavel@ucw.cz> |
| Signed-off-by: Olof Johansson <olof@lixom.net> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| arch/arm/boot/dts/mmp2.dtsi | 9 ++++++--- |
| 1 file changed, 6 insertions(+), 3 deletions(-) |
| |
| diff --git a/arch/arm/boot/dts/mmp2.dtsi b/arch/arm/boot/dts/mmp2.dtsi |
| index 766bbb8495b6..47e5b63339d1 100644 |
| --- a/arch/arm/boot/dts/mmp2.dtsi |
| +++ b/arch/arm/boot/dts/mmp2.dtsi |
| @@ -220,12 +220,15 @@ |
| status = "disabled"; |
| }; |
| |
| - twsi2: i2c@d4025000 { |
| + twsi2: i2c@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"; |
| }; |
| |
| -- |
| 2.19.1 |
| |