[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <4F7117FD.7000700@cavium.com>
Date: Mon, 26 Mar 2012 18:29:33 -0700
From: David Daney <david.daney@...ium.com>
To: Rob Herring <robherring2@...il.com>
CC: David Daney <ddaney.cavm@...il.com>,
"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
"ralf@...ux-mips.org" <ralf@...ux-mips.org>,
"devicetree-discuss@...ts.ozlabs.org"
<devicetree-discuss@...ts.ozlabs.org>,
Grant Likely <grant.likely@...retlab.ca>,
Rob Herring <rob.herring@...xeda.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
"Ben Dooks (embedded platforms)" <ben-linux@...ff.org>,
"Jean Delvare (PC drivers, core)" <khali@...ux-fr.org>
Subject: Re: [PATCH 1/5] i2c: Convert i2c-octeon.c to use device tree.
On 03/26/2012 06:20 PM, Rob Herring wrote:
[...]
>> ---
>>
>> Should probably go via Ralf's linux-mips.org tree.
>>
>> arch/mips/cavium-octeon/octeon-irq.c | 2 -
>> arch/mips/cavium-octeon/octeon-platform.c | 84 -------------------------
>> arch/mips/include/asm/octeon/octeon.h | 5 --
>> drivers/i2c/busses/i2c-octeon.c | 94 ++++++++++++++++-------------
>> 4 files changed, 52 insertions(+), 133 deletions(-)
>
> snip
>
>>
>> - if (i2c_data == NULL) {
>> - dev_err(i2c->dev, "no I2C frequency data\n");
>> + /*
>> + * "clock-rate" is a legacy binding, the official binding is
>> + * "clock-frequency". Try the official one first and then
>> + * fall back if it doesn't exist.
>> + */
>> + data = of_get_property(pdev->dev.of_node, "clock-frequency",&len);
>> + if (!data || len != sizeof(*data))
>> + data = of_get_property(pdev->dev.of_node, "clock-rate",&len);
>> + if (data&& len == sizeof(*data)) {
>> + i2c->twsi_freq = be32_to_cpup(data);
>
> Can't you use of_property_read_u32?
I will investigate, and use it if possible.
>
> Does the legacy binding really exist as DT support is new?
>
Yes, unfortunately some bootloaders escaped into the wild with the
"clock-rate" binding.
> Otherwise,
>
> Acked-by: Rob Herring<rob.herring@...xeda.com>
>
Thanks,
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists