int imx6_ocotp_blow_one_u32(struct ocotp_priv *priv, u32 index, u32 data,
u32 *pfused_value)
{
int ret;
ret = imx6_ocotp_prepare(priv);
if (ret) {
dev_err(&priv->dev, "prepare to write failed\n");
return ret;
}
ret = fuse_blow_addr(priv, index, data);
if (ret) {
dev_err(&priv->dev, "fuse blow failed\n");
return ret;
}
if (readl(priv->base + OCOTP_CTRL) & OCOTP_CTRL_ERROR) {
dev_err(&priv->dev, "bad write status\n");
return -EFAULT;
}
ret = imx6_ocotp_read_one_u32(priv, index, pfused_value);
return ret;
}
/*
* blow one u32 to indexed fuse
*/
int imx_otp_blow_one_u32(u32 index, u32 data, u32 *pfused_value)
{
u32 ctrl_reg = 0;
int ret = 0;
if (otp_clk_enable()) {
ret = -1;
goto exit_nop;
}
if (otp_blow_prep()) {
ret = -1;
printf("ERROR: blow preparation failed\n");
goto exit_cleanup;
}
if (fuse_blow_addr(index, data)) {
ret = -1;
printf("ERROR: blow fuse failed\n");
goto exit_cleanup;
}
if (otp_blow_post()) {
ret = -1;
printf("ERROR: blow post operation failed\n");
goto exit_cleanup;
}
ctrl_reg = readl(IMX_OTP_BASE + HW_OCOTP_CTRL);
if (ctrl_reg & BM_OCOTP_CTRL_ERROR) {
ret = -1;
goto exit_cleanup;
}
if (imx_otp_read_one_u32(index, pfused_value)) {
ret = -1;
goto exit_cleanup;
}
exit_cleanup:
otp_clk_disable();
exit_nop:
return ret;
}