From: Luca Ceresoli <luca@lucaceresoli.net>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>,
linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org, linux-i3c@lists.infradead.org,
"Kieran Bingham" <kieran@ksquared.org.uk>,
"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
"Jacopo Mondi" <jacopo@jmondi.org>,
"Laurent Pinchart" <laurent.pinchart@ideasonboard.com>,
"Vladimir Zapolskiy" <vz@mleia.com>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [RFC PATCH 6/7] i2c: of: mark a whole array of regs as reserved
Date: Fri, 28 Feb 2020 13:11:51 +0100 [thread overview]
Message-ID: <5bcda563-cbb6-c615-58fb-1f0fe9ed4c9d@lucaceresoli.net> (raw)
In-Reply-To: <20200220172403.26062-7-wsa+renesas@sang-engineering.com>
Hi,
On 20/02/20 18:24, Wolfram Sang wrote:
> Back then, 'reg' properties in I2C DT bindings only contained one
> address and this address was assigned a device and, thus, blocked.
> Meanwhile, chips using multiple addresses are common and the 'reg'
> property can be an array described by 'reg-names'. This code enhances
> I2C DT parsing, so it will reserve all addresses described in an array.
> They will be bound to the 'dummy' driver as 'reserved' iff the first
> address can be assigned successfully. If that is not the case, the array
> is not further considered. If one later address of the array can not be
> assigned, it will be reported but we don't bail out. The driver has to
> decide if that address is critical or not.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
--
Luca
WARNING: multiple messages have this Message-ID (diff)
From: Luca Ceresoli <luca@lucaceresoli.net>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>,
linux-i2c@vger.kernel.org
Cc: devicetree@vger.kernel.org, "Jacopo Mondi" <jacopo@jmondi.org>,
linux-kernel@vger.kernel.org, "Vladimir Zapolskiy" <vz@mleia.com>,
linux-renesas-soc@vger.kernel.org,
"Kieran Bingham" <kieran@bingham.xyz>,
"Laurent Pinchart" <laurent.pinchart@ideasonboard.com>,
"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
linux-i3c@lists.infradead.org
Subject: Re: [RFC PATCH 6/7] i2c: of: mark a whole array of regs as reserved
Date: Fri, 28 Feb 2020 13:11:51 +0100 [thread overview]
Message-ID: <5bcda563-cbb6-c615-58fb-1f0fe9ed4c9d@lucaceresoli.net> (raw)
In-Reply-To: <20200220172403.26062-7-wsa+renesas@sang-engineering.com>
Hi,
On 20/02/20 18:24, Wolfram Sang wrote:
> Back then, 'reg' properties in I2C DT bindings only contained one
> address and this address was assigned a device and, thus, blocked.
> Meanwhile, chips using multiple addresses are common and the 'reg'
> property can be an array described by 'reg-names'. This code enhances
> I2C DT parsing, so it will reserve all addresses described in an array.
> They will be bound to the 'dummy' driver as 'reserved' iff the first
> address can be assigned successfully. If that is not the case, the array
> is not further considered. If one later address of the array can not be
> assigned, it will be reported but we don't bail out. The driver has to
> decide if that address is critical or not.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
--
Luca
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next prev parent reply other threads:[~2020-02-28 12:11 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-20 17:23 [RFC PATCH 0/7] i2c: of: reserve unknown and ancillary addresses Wolfram Sang
2020-02-20 17:23 ` Wolfram Sang
2020-02-20 17:23 ` [RFC PATCH 1/7] i2c: add sanity check for parameter of i2c_verify_client() Wolfram Sang
2020-02-20 17:23 ` Wolfram Sang
2020-02-21 9:36 ` Geert Uytterhoeven
2020-02-21 9:36 ` Geert Uytterhoeven
2020-02-20 17:23 ` [RFC PATCH 2/7] i2c: use DEFINE for the dummy driver name Wolfram Sang
2020-02-20 17:23 ` Wolfram Sang
2020-02-21 9:38 ` Geert Uytterhoeven
2020-02-21 9:38 ` Geert Uytterhoeven
2020-02-20 17:23 ` [RFC PATCH 3/7] i2c: allow DT nodes without 'compatible' Wolfram Sang
2020-02-20 17:23 ` Wolfram Sang
2020-02-20 17:23 ` Wolfram Sang
2020-02-21 9:45 ` Geert Uytterhoeven
2020-02-21 9:45 ` Geert Uytterhoeven
2020-02-21 9:45 ` Geert Uytterhoeven
2020-02-21 9:48 ` Geert Uytterhoeven
2020-02-21 9:48 ` Geert Uytterhoeven
2020-02-21 9:48 ` Geert Uytterhoeven
2020-02-23 23:11 ` Luca Ceresoli
2020-02-23 23:11 ` Luca Ceresoli
2020-03-12 11:19 ` Wolfram Sang
2020-03-12 11:19 ` Wolfram Sang
2020-03-12 11:44 ` Alexandre Belloni
2020-03-12 11:44 ` Alexandre Belloni
2020-03-12 11:44 ` Alexandre Belloni
2020-04-10 13:47 ` Luca Ceresoli
2020-04-10 13:47 ` Luca Ceresoli
2020-02-26 16:30 ` Rob Herring
2020-02-26 16:30 ` Rob Herring
2020-02-26 16:30 ` Rob Herring
2020-02-20 17:24 ` [RFC PATCH 4/7] i2c: of: remove superfluous parameter from exported function Wolfram Sang
2020-02-20 17:24 ` Wolfram Sang
2020-02-21 9:50 ` Geert Uytterhoeven
2020-02-21 9:50 ` Geert Uytterhoeven
2020-02-21 9:50 ` Geert Uytterhoeven
2020-02-24 8:12 ` Luca Ceresoli
2020-02-24 8:12 ` Luca Ceresoli
2020-02-20 17:24 ` [RFC PATCH 5/7] i2c: of: error message unification Wolfram Sang
2020-02-20 17:24 ` Wolfram Sang
2020-02-21 9:54 ` Geert Uytterhoeven
2020-02-21 9:54 ` Geert Uytterhoeven
2020-02-20 17:24 ` [RFC PATCH 6/7] i2c: of: mark a whole array of regs as reserved Wolfram Sang
2020-02-20 17:24 ` Wolfram Sang
2020-02-21 10:09 ` Geert Uytterhoeven
2020-02-21 10:09 ` Geert Uytterhoeven
2020-03-12 11:21 ` Wolfram Sang
2020-03-12 11:21 ` Wolfram Sang
2020-03-18 14:33 ` Wolfram Sang
2020-03-18 14:33 ` Wolfram Sang
2020-02-28 12:11 ` Luca Ceresoli [this message]
2020-02-28 12:11 ` Luca Ceresoli
2020-02-20 17:24 ` [RFC PATCH 7/7] i2c: core: hand over reserved devices when requesting ancillary addresses Wolfram Sang
2020-02-20 17:24 ` Wolfram Sang
2020-02-21 10:13 ` Geert Uytterhoeven
2020-02-21 10:13 ` Geert Uytterhoeven
2020-02-21 10:13 ` Geert Uytterhoeven
2020-02-28 12:11 ` Luca Ceresoli
2020-02-28 12:11 ` Luca Ceresoli
2020-03-12 11:30 ` Wolfram Sang
2020-03-12 11:30 ` Wolfram Sang
2020-03-12 11:21 ` Wolfram Sang
2020-03-12 11:21 ` Wolfram Sang
2020-03-13 12:42 ` Wolfram Sang
2020-03-13 12:42 ` Wolfram Sang
2020-02-21 10:15 ` [RFC PATCH 0/7] i2c: of: reserve unknown and " Geert Uytterhoeven
2020-02-21 10:15 ` Geert Uytterhoeven
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