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authorShawn Guo <shawn.guo@freescale.com>2011-01-14 15:25:52 +0800
committerSascha Hauer <s.hauer@pengutronix.de>2011-01-21 11:36:49 +0100
commita320b2793dae44953dc58e9f681d8f161eb5b3ab (patch)
treeb495c50e806b6ff1c8d30625f32b0660f71bb5fa /arch/arm/mach-mxs/mach-mx28evk.c
parent67f43086a24b77a82724855141a5b7a4d72549bd (diff)
downloadop-kernel-dev-a320b2793dae44953dc58e9f681d8f161eb5b3ab.zip
op-kernel-dev-a320b2793dae44953dc58e9f681d8f161eb5b3ab.tar.gz
ARM: mxs/mx28evk: read fec mac address from ocotp
Read fec mac address from ocotp and save it into fec_platform_data mac field for fec driver to use. Signed-off-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs/mach-mx28evk.c')
-rw-r--r--arch/arm/mach-mxs/mach-mx28evk.c35
1 files changed, 34 insertions, 1 deletions
diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
index 8e2c597..e8db99f 100644
--- a/arch/arm/mach-mxs/mach-mx28evk.c
+++ b/arch/arm/mach-mxs/mach-mx28evk.c
@@ -119,7 +119,7 @@ static void __init mx28evk_fec_reset(void)
gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
}
-static struct fec_platform_data mx28_fec_pdata[] = {
+static struct fec_platform_data mx28_fec_pdata[] __initdata = {
{
/* fec0 */
.phy = PHY_INTERFACE_MODE_RMII,
@@ -129,12 +129,45 @@ static struct fec_platform_data mx28_fec_pdata[] = {
},
};
+static int __init mx28evk_fec_get_mac(void)
+{
+ int i;
+ u32 val;
+ const u32 *ocotp = mxs_get_ocotp();
+
+ if (!ocotp)
+ goto error;
+
+ /*
+ * OCOTP only stores the last 4 octets for each mac address,
+ * so hard-code Freescale OUI (00:04:9f) here.
+ */
+ for (i = 0; i < 2; i++) {
+ val = ocotp[i * 4];
+ mx28_fec_pdata[i].mac[0] = 0x00;
+ mx28_fec_pdata[i].mac[1] = 0x04;
+ mx28_fec_pdata[i].mac[2] = 0x9f;
+ mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
+ mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
+ mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
+ }
+
+ return 0;
+
+error:
+ pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
+ return -ETIMEDOUT;
+}
+
static void __init mx28evk_init(void)
{
mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
mx28_add_duart();
+ if (mx28evk_fec_get_mac())
+ pr_warn("%s: failed on fec mac setup\n", __func__);
+
mx28evk_fec_reset();
mx28_add_fec(0, &mx28_fec_pdata[0]);
mx28_add_fec(1, &mx28_fec_pdata[1]);
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