linux-kernel - Re: [PATCH v5 02/11] dt-bindings: i2c: Discard i2c-slave flag from the DW I2C example

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Date:   Wed, 27 May 2020 18:33:51 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Rob Herring <robh+dt@...nel.org>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        <linux-mips@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 02/11] dt-bindings: i2c: Discard i2c-slave flag from
 the DW I2C example

Rob,
Could you pay attention to this patch? The patchset review procedure is
nearly over, while the DT part is only partly reviewed by you.

Thanks
-Sergey

On Wed, May 27, 2020 at 06:30:37PM +0300, Serge Semin wrote:
> dtc currently doesn't support I2C_OWN_SLAVE_ADDRESS flag set in the
> i2c "reg" property. If it is the compiler will print a warning:
> 
> Warning (i2c_bus_reg): /example-2/i2c@...0000/eeprom@64: I2C bus unit address format error, expected "40000064"
> Warning (i2c_bus_reg): /example-2/i2c@...0000/eeprom@64:reg: I2C address must be less than 10-bits, got "0x40000064"
> 
> In order to silence dtc up let's discard the flag from the DW I2C DT
> binding example for now. Just revert this commit when dtc is fixed.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
> Cc: linux-mips@...r.kernel.org
> 
> ---
> 
> Changelog v3:
> - This is a new patch created as a result of the Rob request to remove
>   the EEPROM-slave bit setting in the DT binndings example until the dtc
>   is fixed.
> ---
>  Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
> index 4bd430b2b41d..101d78e8f19d 100644
> --- a/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
> +++ b/Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
> @@ -137,7 +137,7 @@ examples:
>  
>        eeprom@64 {
>          compatible = "linux,slave-24c02";
> -        reg = <0x40000064>;
> +        reg = <0x64>;
>        };
>      };
>    - |
> -- 
> 2.26.2
>