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Message-ID: <5319E7A1.5060605@st.com>
Date: Fri, 7 Mar 2014 15:37:05 +0000
From: srinivas kandagatla <srinivas.kandagatla@st.com>
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To: Maxime COQUELIN <maxime.coquelin@st.com>, Rob Landley <rob@landley.net>,
        Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Russell King <linux@arm.linux.org.uk>,
        Stuart Menefy <stuart.menefy@st.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        <linux-doc@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>,
        <kernel@stlinux.com>
Cc: <lee.jones@linaro.org>
Subject: Re: [PATCH v3 2/5] pinctrl: st: Enhance the controller to manage
 unavailable registers
References: <1394203251-25361-1-git-send-email-maxime.coquelin@st.com> <1394203251-25361-3-git-send-email-maxime.coquelin@st.com>
In-Reply-To: <1394203251-25361-3-git-send-email-maxime.coquelin@st.com>
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On 07/03/14 14:40, Maxime COQUELIN wrote:
> From: Giuseppe Cavallaro <peppe.cavallaro@st.com>
> 
> This patch adds a new logic inside the st pinctrl to manage
> an unsupported scenario: some sysconfig are not available!
> 
> This is the case of STiH407 where, although documented, the
> following registers from SYSCFG_FLASH have been removed from the SoC.
> 
> SYSTEM_CONFIG3040
>    Output Enable pad control for all PIO Alternate Functions
> and
> SYSTEM_ CONFIG3050
>    Pull Up pad control for all PIO Alternate Functions
> 
> Without managing this condition an imprecise external abort
> will be detect.
> 
> To do this the patch also reviews the st_parse_syscfgs
> and other routines to manipulate the registers only if
> actually available.
> In any case, for example the st_parse_syscfgs detected
> an error condition but no action was made in the
> st_pctl_probe_dt.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>