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generic: rtl8366rb: add support for initvals from DTS 

Allow per-device initvals in the DTS file for rlt8366rb
switches.

Shamelessly copies 30494598f8

Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
owl
Kevin Darbyshire-Bryant 2017-04-20 19:14:35 +01:00 committed by Mathias Kresin
parent 4b195a611f
commit f4ae444f3e
1 changed files with 25 additions and 0 deletions
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25
target/linux/generic/files/drivers/net/phy/rtl8366rb.c
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@ -282,6 +282,31 @@ static int rtl8366rb_reset_chip(struct rtl8366_smi *smi)
static int rtl8366rb_setup(struct rtl8366_smi *smi)
{
int err;
#ifdef CONFIG_OF
unsigned i;
struct device_node *np;
unsigned num_initvals;
const __be32 *paddr;
np = smi->parent->of_node;
paddr = of_get_property(np, "realtek,initvals", &num_initvals);
if (paddr) {
dev_info(smi->parent, "applying initvals from DTS\n");
if (num_initvals < (2 * sizeof(*paddr)))
return -EINVAL;
num_initvals /= sizeof(*paddr);
for (i = 0; i < num_initvals - 1; i += 2) {
u32 reg = be32_to_cpup(paddr + i);
u32 val = be32_to_cpup(paddr + i + 1);
REG_WR(smi, reg, val);
}
}
#endif
/* set maximum packet length to 1536 bytes */
REG_RMW(smi, RTL8366RB_SGCR, RTL8366RB_SGCR_MAX_LENGTH_MASK,