From: Reid Tonking reidt@ti.com
Useful when trying to check if an opp efuse is burned in or not.
k3_avs driver checks opp_ids when probing and overwrites the voltage values in vd_data for the respective board. This can be called to check that data and returns 0 if valid.
Signed-off-by: Reid Tonking reidt@ti.com Signed-off-by: Aniket Limaye a-limaye@ti.com --- drivers/misc/k3_avs.c | 25 +++++++++++++++++++++++++ include/k3-avs.h | 1 + 2 files changed, 26 insertions(+)
diff --git a/drivers/misc/k3_avs.c b/drivers/misc/k3_avs.c index 9d950d034a5..90cd9dfe7f9 100644 --- a/drivers/misc/k3_avs.c +++ b/drivers/misc/k3_avs.c @@ -192,6 +192,31 @@ static int match_opp(struct vd_data *vd, u32 freq) return -EINVAL; }
+/** + * k3_check_opp: Check for presence of opp efuse + * @opp_id: opp id to check if voltage is present + * + * Checks to see if an opp has voltage. k3_avs probe will populate + * votlage data if efuse is present. Returns 0 if data is valid. + */ +int k3_check_opp(struct udevice *dev, int vdd_id, int opp_id) +{ + struct k3_avs_privdata *priv = dev_get_priv(dev); + struct vd_data *vd; + int volt; + + vd = get_vd(priv, vdd_id); + if (!vd) + return -EINVAL; + + volt = vd->opps[opp_id].volt; + if (volt) + return 0; + + printf("No efuse found for opp_%d\n", opp_id); + return -EINVAL; +} + /** * k3_avs_notify_freq: Notify clock rate change towards AVS subsystem * @dev_id: Device ID for the clock to be changed diff --git a/include/k3-avs.h b/include/k3-avs.h index f6f1031c9cc..41a1da36356 100644 --- a/include/k3-avs.h +++ b/include/k3-avs.h @@ -27,5 +27,6 @@
int k3_avs_set_opp(struct udevice *dev, int vdd_id, int opp_id); int k3_avs_notify_freq(int dev_id, int clk_id, u32 freq); +int k3_check_opp(struct udevice *dev, int vdd_id, int opp_id);
#endif