linux-kernel - RE: [PATCH v5 2/5] mfd: da9061: make register CONFIG

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Message-ID: <9d9032c5e1da4a0f83b0d8eba9156d4c@dh-electronics.com>
Date:   Mon, 6 Dec 2021 08:46:52 +0000
From:   Christoph Niedermaier <cniedermaier@...electronics.com>
To:     Andrej Picej <andrej.picej@...ik.com>,
        "support.opensource@...semi.com" <support.opensource@...semi.com>,
        "linux@...ck-us.net" <linux@...ck-us.net>,
        "linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>
CC:     "wim@...ux-watchdog.org" <wim@...ux-watchdog.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "linux-imx@....com" <linux-imx@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: RE: [PATCH v5 2/5] mfd: da9061: make register CONFIG_I writable

From: Andrej Picej
Sent: Monday, December 6, 2021 7:47 AM
> 
> Make the config register CONFIG_I writable to change the watchdog mode.
> 
> Signed-off-by: Andrej Picej <andrej.picej@...ik.com>
> ---
> Chnages in v5:
>  - new patch, make CONFIG_I writable also for da9061 version
> ---
>  drivers/mfd/da9062-core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mfd/da9062-core.c b/drivers/mfd/da9062-core.c
> index 7041ba53efb4..20e5ce2a2354 100644
> --- a/drivers/mfd/da9062-core.c
> +++ b/drivers/mfd/da9062-core.c
> @@ -453,6 +453,7 @@ static const struct regmap_range
> da9061_aa_writeable_ranges[] = {
>         regmap_reg_range(DA9062AA_VBUCK1_B, DA9062AA_VBUCK4_B),
>         regmap_reg_range(DA9062AA_VBUCK3_B, DA9062AA_VBUCK3_B),
>         regmap_reg_range(DA9062AA_VLDO1_B, DA9062AA_VLDO4_B),
> +       regmap_reg_range(DA9062AA_CONFIG_I, DA9062AA_CONFIG_I),
>         regmap_reg_range(DA9062AA_GP_ID_0, DA9062AA_GP_ID_19),
>  };

Tested it on my DA9061:
- If I don't add anything to my device tree, the system freezes.
- With "dlg,wdt-sd = <1>;" in my devicetree the system restarts.
Thus it works on my system!

Tested-by: Christoph Niedermaier <cniedermaier@...electronics.com>


Thanks and regards
Christoph