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Commit b18ec27c authored by Florian Vaussard's avatar Florian Vaussard Committed by Marc Kleine-Budde
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can: sja1000: of: add reg-io-width property for 8, 16 and 32-bit register access 



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: default avatarFlorian Vaussard <florian.vaussard@epfl.ch>
Tested-by: default avatarAndreas Larsson <andreas@gaisler.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 73c90d94

drivers/net/can/sja1000/sja1000_platform.c

+18 −2
Original line number Diff line number Diff line
@@ -101,8 +101,24 @@ static void sp_populate_of(struct sja1000_priv *priv, struct device_node *of) 
	int err;

	u32 prop;



	err = of_property_read_u32(of, "reg-io-width", &prop);

	if (err)

		prop = 1; /* 8 bit is default */



	switch (prop) {

	case 4:

		priv->read_reg = sp_read_reg32;

		priv->write_reg = sp_write_reg32;

		break;

	case 2:

		priv->read_reg = sp_read_reg16;

		priv->write_reg = sp_write_reg16;

		break;

	case 1:	/* fallthrough */

	default:

		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)