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net: ravb: Add tx/rx delay flag checks and support for rgmii-rxid

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Some boards like the Beacon RZ/G2 SOM use either flags for
tx-internal-delay-ps, rx-internal-delay-ps or rgmii-rxid.

In Linux the APSR_RDM flag is set when either rx-internal-delay-ps
is set or the mode is rgmii-rxid, and the APSR_TDM is set when
tx-internal-delay-ps is found or rgmii-txid is set, and both
are set if rgmii-id is set.

The ravb driver in U-Boot driver was missing rgmii-rxid support,
so add that support in a similar fashion to what is done in Linux.

Signed-off-by: Adam Ford <aford173@gmail.com>
This commit is contained in:
Adam Ford 2022-02-25 14:32:52 -06:00 committed by Marek Vasut
parent c6ae38b389
commit a26c2b155b
1 changed files with 31 additions and 3 deletions
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34
drivers/net/ravb.c
View File

@ -52,6 +52,7 @@
#define CSR_OPS 0x0000000F
#define CSR_OPS_CONFIG BIT(1)
#define APSR_RDM BIT(13)
#define APSR_TDM BIT(14)
#define TCCR_TSRQ0 BIT(0)
@ -376,6 +377,9 @@ static int ravb_dmac_init(struct udevice *dev)
struct ravb_priv *eth = dev_get_priv(dev);
struct eth_pdata *pdata = dev_get_plat(dev);
int ret = 0;
int mode = 0;
unsigned int delay;
bool explicit_delay = false;
/* Set CONFIG mode */
ret = ravb_reset(dev);
@ -402,9 +406,33 @@ static int ravb_dmac_init(struct udevice *dev)
(rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A77995))
return 0;
if ((pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) ||
(pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID))
writel(APSR_TDM, eth->iobase + RAVB_REG_APSR);
if (!dev_read_u32(dev, "rx-internal-delay-ps", &delay)) {
/* Valid values are 0 and 1800, according to DT bindings */
if (delay) {
mode |= APSR_RDM;
explicit_delay = true;
}
}
if (!dev_read_u32(dev, "tx-internal-delay-ps", &delay)) {
/* Valid values are 0 and 2000, according to DT bindings */
if (delay) {
mode |= APSR_TDM;
explicit_delay = true;
}
}
if (!explicit_delay) {
if (pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID)
mode |= APSR_RDM;
if (pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
pdata->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID)
mode |= APSR_TDM;
}
writel(mode, eth->iobase + RAVB_REG_APSR);
return 0;
}