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-rw-r--r--board/gdsys/405ep/iocon.c220
1 files changed, 172 insertions, 48 deletions
diff --git a/board/gdsys/405ep/iocon.c b/board/gdsys/405ep/iocon.c
index 664b1e164e4..7a98e41d0aa 100644
--- a/board/gdsys/405ep/iocon.c
+++ b/board/gdsys/405ep/iocon.c
@@ -99,7 +99,6 @@ unsigned int mclink_fpgacount;
struct ihs_fpga *fpga_ptr[] = CONFIG_SYS_FPGA_PTR;
static int setup_88e1518(const char *bus, unsigned char addr);
-static int verify_88e1518(const char *bus, unsigned char addr);
int fpga_set_reg(u32 fpga, u16 *reg, off_t regoff, u16 data)
{
@@ -405,11 +404,7 @@ int last_stage_init(void)
if ((mux_ch == 1) && !ch0_rgmii2_present)
continue;
- if (!verify_88e1518(bb_miiphy_buses[0].name, mux_ch)) {
- printf("Fixup 88e1518 erratum on %s phy %u\n",
- bb_miiphy_buses[0].name, mux_ch);
- setup_88e1518(bb_miiphy_buses[0].name, mux_ch);
- }
+ setup_88e1518(bb_miiphy_buses[0].name, mux_ch);
}
}
@@ -434,11 +429,7 @@ int last_stage_init(void)
if (feature_carrier_speed == CARRIER_SPEED_1G) {
miiphy_register(bb_miiphy_buses[k].name,
bb_miiphy_read, bb_miiphy_write);
- if (!verify_88e1518(bb_miiphy_buses[k].name, 0)) {
- printf("Fixup 88e1518 erratum on %s\n",
- bb_miiphy_buses[k].name);
- setup_88e1518(bb_miiphy_buses[k].name, 0);
- }
+ setup_88e1518(bb_miiphy_buses[k].name, 0);
}
}
@@ -652,56 +643,189 @@ struct bb_miiphy_bus bb_miiphy_buses[] = {
int bb_miiphy_buses_num = sizeof(bb_miiphy_buses) /
sizeof(bb_miiphy_buses[0]);
+enum {
+ MIICMD_SET,
+ MIICMD_MODIFY,
+ MIICMD_VERIFY_VALUE,
+ MIICMD_WAIT_FOR_VALUE,
+};
+
+struct mii_setupcmd {
+ u8 token;
+ u8 reg;
+ u16 data;
+ u16 mask;
+ u32 timeout;
+};
+
/*
- * Workaround for erratum mentioned in 88E1518 release notes
+ * verify we are talking to a 88e1518
*/
+struct mii_setupcmd verify_88e1518[] = {
+ { MIICMD_SET, 22, 0x0000 },
+ { MIICMD_VERIFY_VALUE, 2, 0x0141, 0xffff },
+ { MIICMD_VERIFY_VALUE, 3, 0x0dd0, 0xfff0 },
+};
-static int verify_88e1518(const char *bus, unsigned char addr)
-{
- u16 phy_id1, phy_id2;
-
- if (miiphy_read(bus, addr, 2, &phy_id1) ||
- miiphy_read(bus, addr, 3, &phy_id2)) {
- printf("Error reading from the PHY addr=%02x\n", addr);
- return -EIO;
- }
+/*
+ * workaround for erratum mentioned in 88E1518 release notes
+ */
+struct mii_setupcmd fixup_88e1518[] = {
+ { MIICMD_SET, 22, 0x00ff },
+ { MIICMD_SET, 17, 0x214b },
+ { MIICMD_SET, 16, 0x2144 },
+ { MIICMD_SET, 17, 0x0c28 },
+ { MIICMD_SET, 16, 0x2146 },
+ { MIICMD_SET, 17, 0xb233 },
+ { MIICMD_SET, 16, 0x214d },
+ { MIICMD_SET, 17, 0xcc0c },
+ { MIICMD_SET, 16, 0x2159 },
+ { MIICMD_SET, 22, 0x00fb },
+ { MIICMD_SET, 7, 0xc00d },
+ { MIICMD_SET, 22, 0x0000 },
+};
- if ((phy_id1 != 0x0141) || ((phy_id2 & 0xfff0) != 0x0dd0))
- return -EINVAL;
+/*
+ * default initialization:
+ * - set RGMII receive timing to "receive clock transition when data stable"
+ * - set RGMII transmit timing to "transmit clock internally delayed"
+ * - set RGMII output impedance target to 78,8 Ohm
+ * - run output impedance calibration
+ * - set autonegotiation advertise to 1000FD only
+ */
+struct mii_setupcmd default_88e1518[] = {
+ { MIICMD_SET, 22, 0x0002 },
+ { MIICMD_MODIFY, 21, 0x0030, 0x0030 },
+ { MIICMD_MODIFY, 25, 0x0000, 0x0003 },
+ { MIICMD_MODIFY, 24, 0x8000, 0x8000 },
+ { MIICMD_WAIT_FOR_VALUE, 24, 0x4000, 0x4000, 2000 },
+ { MIICMD_SET, 22, 0x0000 },
+ { MIICMD_MODIFY, 4, 0x0000, 0x01e0 },
+ { MIICMD_MODIFY, 9, 0x0200, 0x0300 },
+};
- return 0;
-}
+/*
+ * turn off CLK125 for PHY daughterboard
+ */
+struct mii_setupcmd ch1fix_88e1518[] = {
+ { MIICMD_SET, 22, 0x0002 },
+ { MIICMD_MODIFY, 16, 0x0006, 0x0006 },
+ { MIICMD_SET, 22, 0x0000 },
+};
-struct regfix_88e1518 {
- u8 reg;
- u16 data;
-} regfix_88e1518[] = {
- { 22, 0x00ff },
- { 17, 0x214b },
- { 16, 0x2144 },
- { 17, 0x0c28 },
- { 16, 0x2146 },
- { 17, 0xb233 },
- { 16, 0x214d },
- { 17, 0xcc0c },
- { 16, 0x2159 },
- { 22, 0x00fb },
- { 7, 0xc00d },
- { 22, 0x0000 },
+/*
+ * perform copper software reset
+ */
+struct mii_setupcmd swreset_88e1518[] = {
+ { MIICMD_SET, 22, 0x0000 },
+ { MIICMD_MODIFY, 0, 0x8000, 0x8000 },
+ { MIICMD_WAIT_FOR_VALUE, 0, 0x0000, 0x8000, 2000 },
};
-static int setup_88e1518(const char *bus, unsigned char addr)
+static int process_setupcmd(const char *bus, unsigned char addr,
+ struct mii_setupcmd *setupcmd)
{
+ int res;
+ u8 reg = setupcmd->reg;
+ u16 data = setupcmd->data;
+ u16 mask = setupcmd->mask;
+ u32 timeout = setupcmd->timeout;
+ u16 orig_data;
+ unsigned long start;
+
+ debug("mii %s:%u reg %2u ", bus, addr, reg);
+
+ switch (setupcmd->token) {
+ case MIICMD_MODIFY:
+ res = miiphy_read(bus, addr, reg, &orig_data);
+ if (res)
+ break;
+ debug("is %04x. (value %04x mask %04x) ", orig_data, data,
+ mask);
+ data = (orig_data & ~mask) | (data & mask);
+ case MIICMD_SET:
+ debug("=> %04x\n", data);
+ res = miiphy_write(bus, addr, reg, data);
+ break;
+ case MIICMD_VERIFY_VALUE:
+ res = miiphy_read(bus, addr, reg, &orig_data);
+ if (res)
+ break;
+ if ((orig_data & mask) != (data & mask))
+ res = -1;
+ debug("(value %04x mask %04x) == %04x? %s\n", data, mask,
+ orig_data, res ? "FAIL" : "PASS");
+ break;
+ case MIICMD_WAIT_FOR_VALUE:
+ res = -1;
+ start = get_timer(0);
+ while ((res != 0) && (get_timer(start) < timeout)) {
+ res = miiphy_read(bus, addr, reg, &orig_data);
+ if (res)
+ continue;
+ if ((orig_data & mask) != (data & mask))
+ res = -1;
+ }
+ debug("(value %04x mask %04x) == %04x? %s after %lu ms\n", data,
+ mask, orig_data, res ? "FAIL" : "PASS",
+ get_timer(start));
+ break;
+ default:
+ res = -1;
+ break;
+ }
+
+ return res;
+}
+
+static int process_setup(const char *bus, unsigned char addr,
+ struct mii_setupcmd *setupcmd, unsigned int count)
+{
+ int res = 0;
unsigned int k;
- for (k = 0; k < ARRAY_SIZE(regfix_88e1518); ++k) {
- if (miiphy_write(bus, addr,
- regfix_88e1518[k].reg,
- regfix_88e1518[k].data)) {
- printf("Error writing to the PHY addr=%02x\n", addr);
- return -1;
+ for (k = 0; k < count; ++k) {
+ res = process_setupcmd(bus, addr, &setupcmd[k]);
+ if (res) {
+ printf("mii cmd %u on bus %s addr %u failed, aborting setup",
+ setupcmd[k].token, bus, addr);
+ break;
}
}
+ return res;
+}
+
+static int setup_88e1518(const char *bus, unsigned char addr)
+{
+ int res;
+
+ res = process_setup(bus, addr,
+ verify_88e1518, ARRAY_SIZE(verify_88e1518));
+ if (res)
+ return res;
+
+ res = process_setup(bus, addr,
+ fixup_88e1518, ARRAY_SIZE(fixup_88e1518));
+ if (res)
+ return res;
+
+ res = process_setup(bus, addr,
+ default_88e1518, ARRAY_SIZE(default_88e1518));
+ if (res)
+ return res;
+
+ if (addr) {
+ res = process_setup(bus, addr,
+ ch1fix_88e1518, ARRAY_SIZE(ch1fix_88e1518));
+ if (res)
+ return res;
+ }
+
+ res = process_setup(bus, addr,
+ swreset_88e1518, ARRAY_SIZE(swreset_88e1518));
+ if (res)
+ return res;
+
return 0;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-18 12:49:06 +0000