linux-kernel - [PATCH 0/2] pinctrl: sh-pfc: tidyup IPSR/MOD

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Date:	Wed, 16 Mar 2016 00:46:47 +0000
From:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Linus Walleij <linus.walleij@...aro.org>
CC:	Magnus <magnus.damm@...il.com>, Simon <horms@...ge.net.au>,
	<linux-renesas-soc@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 0/2] pinctrl: sh-pfc: tidyup IPSR/MOD_SEL/GPSR settings order


Hi Geert, Laurent

Gen2 / Gen3 next datasheet will has below note.
Our current PFC settings order is
	MOD_SEL -> GPSR -> IPSR
But, this fixes it to
	MOD_SEL -> IPSR -> GPSR

------------
IPSRx and MOD_SELx registers shall be set before setting GPSRx
registers in case that they need to be configured.
MOD_SELx registers can be set either earlier or later than setting
IPSRx registers.
------------

1) patch make it easy to check
2) patch fixes above

Kuninori Morimoto (2):
      1) pinctrl: sh-pfc: enable to indicate GPSR/IPSR/MOD_SEL for debug
      2) pinctrl: sh-pfc: IPSRx and MOD_SELx should be set before GPSRx

 drivers/pinctrl/sh-pfc/core.c   |  3 ++-
 drivers/pinctrl/sh-pfc/sh_pfc.h | 11 +++++++----
 2 files changed, 9 insertions(+), 5 deletions(-)



Best regards
---
Kuninori Morimoto