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net: dsa: Add support for switch EEPROM access

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On some chips it is possible to access the switch eeprom.
Add infrastructure support for it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2014-10-29 10:45:01 -07:00 • committed by David S. Miller
parent 87e5f66b37
commit 6793abb4e8
3 changed files with 55 additions and 0 deletions
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4
net/dsa/dsa.c
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@ -575,6 +575,7 @@ static int dsa_of_probe(struct platform_device *pdev)
const char *port_name;
int chip_index, port_index;
const unsigned int *sw_addr, *port_reg;
u32 eeprom_len;
int ret;
mdio = of_parse_phandle(np, "dsa,mii-bus", 0);
@ -626,6 +627,9 @@ static int dsa_of_probe(struct platform_device *pdev)
if (cd->sw_addr > PHY_MAX_ADDR)
continue;
if (!of_property_read_u32(np, "eeprom-length", &eeprom_len))
cd->eeprom_len = eeprom_len;
for_each_available_child_of_node(child, port) {
port_reg = of_get_property(port, "reg", NULL);
if (!port_reg)