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authorHelmut Buchsbaum <helmut.buchsbaum@gmail.com>2016-02-09 22:47:17 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-11 19:34:24 +0300
commitc0e6cb1fed5a7390ac84396f6f43e70fc2034ac6 (patch)
treebe8bbee79b82b7e220fb50bc3914ae24d377bc1a /drivers
parent6665e62387c64054493411d00c7b0a5a37af88a5 (diff)
downloadlinux-c0e6cb1fed5a7390ac84396f6f43e70fc2034ac6.tar.xz
net: phy: spi_ks8995: add support for MICREL KSZ8795CLX
Add support for MICREL KSZ8795CLX Integrated 5-Port, 10-/100-Managed Ethernet Switch with Gigabit GMII/RGMII and MII/RMII interfaces. Signed-off-by: Helmut Buchsbaum <helmut.buchsbaum@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/phy/spi_ks8995.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/phy/spi_ks8995.c b/drivers/net/phy/spi_ks8995.c
index 9dcc5b4fd9d1..5e7340f6b37c 100644
--- a/drivers/net/phy/spi_ks8995.c
+++ b/drivers/net/phy/spi_ks8995.c
@@ -77,6 +77,7 @@
#define KS8995_REGS_SIZE 0x80
#define KSZ8864_REGS_SIZE 0x100
+#define KSZ8795_REGS_SIZE 0x100
#define ID1_CHIPID_M 0xf
#define ID1_CHIPID_S 4
@@ -85,9 +86,11 @@
#define ID1_START_SW 1 /* start the switch */
#define FAMILY_KS8995 0x95
+#define FAMILY_KSZ8795 0x87
#define CHIPID_M 0
#define KS8995_CHIP_ID 0x00
#define KSZ8864_CHIP_ID 0x01
+#define KSZ8795_CHIP_ID 0x09
#define KS8995_CMD_WRITE 0x02U
#define KS8995_CMD_READ 0x03U
@@ -97,6 +100,7 @@
enum ks8995_chip_variant {
ks8995,
ksz8864,
+ ksz8795,
max_variant
};
@@ -126,6 +130,14 @@ static const struct ks8995_chip_params ks8995_chip[] = {
.addr_width = 8,
.addr_shift = 0,
},
+ [ksz8795] = {
+ .name = "KSZ8795CLX",
+ .family_id = FAMILY_KSZ8795,
+ .chip_id = KSZ8795_CHIP_ID,
+ .regs_size = KSZ8795_REGS_SIZE,
+ .addr_width = 12,
+ .addr_shift = 1,
+ },
};
struct ks8995_pdata {
@@ -145,6 +157,7 @@ struct ks8995_switch {
static const struct spi_device_id ks8995_id[] = {
{"ks8995", ks8995},
{"ksz8864", ksz8864},
+ {"ksz8795", ksz8795},
{ }
};
MODULE_DEVICE_TABLE(spi, ks8995_id);
@@ -358,6 +371,22 @@ static int ks8995_get_revision(struct ks8995_switch *ks)
err = -ENODEV;
}
break;
+ case FAMILY_KSZ8795:
+ /* try reading chip id at CHIP ID1 */
+ err = ks8995_read_reg(ks, KS8995_REG_ID1, &id1);
+ if (err) {
+ err = -EIO;
+ goto err_out;
+ }
+
+ if (get_chip_id(id1) == ks->chip->chip_id) {
+ ks->revision_id = get_chip_rev(id1);
+ } else {
+ dev_err(&ks->spi->dev, "unsupported chip id for KSZ8795 family: 0x%02x\n",
+ id1);
+ err = -ENODEV;
+ }
+ break;
default:
dev_err(&ks->spi->dev, "unsupported family id: 0x%02x\n", id0);
err = -ENODEV;