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Implement PLL configuration override support, similar to what openwrt

Browse source 
implements.
This commit is contained in:
Adrian Chadd 2012-05-02 07:43:11 +00:00
parent ceec92152b
commit 337ef3cad0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=234919
2 changed files with 57 additions and 3 deletions
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50
sys/mips/atheros/if_arge.c
View file

@ -101,6 +101,7 @@ typedef enum {
ARGE_DBG_RX = 0x00000008,
ARGE_DBG_ERR = 0x00000010,
ARGE_DBG_RESET = 0x00000020,
ARGE_DBG_PLL = 0x00000040,
} arge_debug_flags;
static const char * arge_miicfg_str[] = {
@ -331,6 +332,34 @@ arge_reset_miibus(struct arge_softc *sc)
DELAY(100);
}
static void
arge_fetch_pll_config(struct arge_softc *sc)
{
long int val;
if (resource_long_value(device_get_name(sc->arge_dev),
device_get_unit(sc->arge_dev),
"pll_10", &val) == 0) {
sc->arge_pllcfg.pll_10 = val;
device_printf(sc->arge_dev, "%s: pll_10 = 0x%x\n",
__func__, (int) val);
}
if (resource_long_value(device_get_name(sc->arge_dev),
device_get_unit(sc->arge_dev),
"pll_100", &val) == 0) {
sc->arge_pllcfg.pll_100 = val;
device_printf(sc->arge_dev, "%s: pll_100 = 0x%x\n",
__func__, (int) val);
}
if (resource_long_value(device_get_name(sc->arge_dev),
device_get_unit(sc->arge_dev),
"pll_1000", &val) == 0) {
sc->arge_pllcfg.pll_1000 = val;
device_printf(sc->arge_dev, "%s: pll_1000 = 0x%x\n",
__func__, (int) val);
}
}
static int
arge_attach(device_t dev)
{
@ -371,6 +400,11 @@ arge_attach(device_t dev)
KASSERT(((sc->arge_mac_unit == 0) || (sc->arge_mac_unit == 1)),
("if_arge: Only MAC0 and MAC1 supported"));
/*
* Fetch the PLL configuration.
*/
arge_fetch_pll_config(sc);
/*
* Get the MII configuration, if applicable.
*/
@ -821,7 +855,7 @@ arge_set_pll(struct arge_softc *sc, int media, int duplex)
uint32_t fifo_tx, pll;
int if_speed;
ARGEDEBUG(sc, ARGE_DBG_MII, "set_pll(%04x, %s)\n", media,
ARGEDEBUG(sc, ARGE_DBG_PLL, "set_pll(%04x, %s)\n", media,
duplex == IFM_FDX ? "full" : "half");
cfg = ARGE_READ(sc, AR71XX_MAC_CFG2);
cfg &= ~(MAC_CFG2_IFACE_MODE_1000
@ -859,7 +893,7 @@ arge_set_pll(struct arge_softc *sc, int media, int duplex)
"Unknown media %d\n", media);
}
ARGEDEBUG(sc, ARGE_DBG_MII, "%s: if_speed=%d\n", __func__, if_speed);
ARGEDEBUG(sc, ARGE_DBG_PLL, "%s: if_speed=%d\n", __func__, if_speed);
switch (ar71xx_soc) {
case AR71XX_SOC_AR7240:
@ -881,8 +915,18 @@ arge_set_pll(struct arge_softc *sc, int media, int duplex)
rx_filtmask);
ARGE_WRITE(sc, AR71XX_MAC_FIFO_TX_THRESHOLD, fifo_tx);
/* set PLL registers */
/* fetch PLL registers */
pll = ar71xx_device_get_eth_pll(sc->arge_mac_unit, if_speed);
ARGEDEBUG(sc, ARGE_DBG_PLL, "%s: pll=0x%x\n", __func__, pll);
/* Override if required by platform data */
if (if_speed == 10 && sc->arge_pllcfg.pll_10 != 0)
pll = sc->arge_pllcfg.pll_10;
else if (if_speed == 100 && sc->arge_pllcfg.pll_100 != 0)
pll = sc->arge_pllcfg.pll_100;
else if (if_speed == 1000 && sc->arge_pllcfg.pll_1000 != 0)
pll = sc->arge_pllcfg.pll_1000;
ARGEDEBUG(sc, ARGE_DBG_PLL, "%s: final pll=0x%x\n", __func__, pll);
/* XXX ensure pll != 0 */
ar71xx_device_set_pll_ge(sc->arge_mac_unit, if_speed, pll);

10
sys/mips/atheros/if_argevar.h
View file

@ -118,6 +118,15 @@ struct arge_ring_data {
bus_addr_t arge_tx_ring_paddr;
};
/*
* Allow PLL values to be overridden.
*/
struct arge_pll_data {
uint32_t pll_10;
uint32_t pll_100;
uint32_t pll_1000;
};
struct arge_softc {
struct ifnet *arge_ifp; /* interface info */
device_t arge_dev;
@ -136,6 +145,7 @@ struct arge_softc {
device_t arge_miibus;
device_t arge_miiproxy;
ar71xx_mii_mode arge_miicfg;
struct arge_pll_data arge_pllcfg;
bus_dma_tag_t arge_parent_tag;
bus_dma_tag_t arge_tag;
struct mtx arge_mtx;