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| author | Adam Ford <aford173@gmail.com> | 2022-02-25 14:32:52 -0600 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@gmail.com> | 2022-02-25 21:42:07 +0100 |
| commit | a26c2b155bfd97437dcb64f0ac51a4e0ab8ea7cf (patch) | |
| tree | 8ef9ee0ed824d72c1a9dd2c7d614de507a2fcfd3 /drivers | |
| parent | c6ae38b38967a5c33d729c20e508a03ba3e0e3f6 (diff) | |
| download | u-boot-a26c2b155bfd97437dcb64f0ac51a4e0ab8ea7cf.tar.gz u-boot-a26c2b155bfd97437dcb64f0ac51a4e0ab8ea7cf.tar.bz2 u-boot-a26c2b155bfd97437dcb64f0ac51a4e0ab8ea7cf.zip | |
net: ravb: Add tx/rx delay flag checks and support for rgmii-rxid
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ravb.c | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/drivers/net/ravb.c b/drivers/net/ravb.c index 1d1118c341..4078d33bb5 100644 --- a/drivers/net/ravb.c +++ b/drivers/net/ravb.c @@ -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; } |