On 01/31/2014 11:35 AM, Florian Vaussard wrote:
> Add the 'reg-io-width' property for 8, 16 and 32-bit access, like
> what is currently done with IORESOURCE_MEM_{8,16,32}BIT for non-OF
> boot.
>
> Signed-off-by: Florian Vaussard <[email protected]>
> ---
> drivers/net/can/sja1000/sja1000_platform.c | 13 +++++++++++--
> 1 file changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/can/sja1000/sja1000_platform.c
> b/drivers/net/can/sja1000/sja1000_platform.c
> index 96a92a1..62ebc3d 100644
> --- a/drivers/net/can/sja1000/sja1000_platform.c
> +++ b/drivers/net/can/sja1000/sja1000_platform.c
> @@ -103,8 +103,17 @@ static void sp_populate_of(struct sja1000_priv *priv,
> struct device_node *of)
> int err;
> u32 prop;
>
> - priv->read_reg = sp_read_reg8;
> - priv->write_reg = sp_write_reg8;
> + of_property_read_u32(of, "reg-io-width", &prop);
The new property might not be available in the DT, please check the
return value of of_property_read_u32(). Use 8 bit wide as default.
> + if (prop == 4) {
> + priv->read_reg = sp_read_reg32;
> + priv->write_reg = sp_write_reg32;
> + } else if (prop == 2) {
> + priv->read_reg = sp_read_reg16;
> + priv->write_reg = sp_write_reg16;
> + } else {
> + priv->read_reg = sp_read_reg8;
> + priv->write_reg = sp_write_reg8;
> + }
>
> err = of_property_read_u32(of, "nxp,external-clock-frequency", &prop);
> if (!err)
>
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
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