@@ -302,10 +302,16 @@ static int ath10k_qmi_send_cal_report_req(struct ath10k_qmi *qmi)
struct wlfw_cal_report_resp_msg_v01 resp = {};
struct wlfw_cal_report_req_msg_v01 req = {};
struct ath10k *ar = qmi->ar;
+ struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
struct qmi_txn txn;
int i, j = 0;
int ret;
+ if (ar_snoc->xo_cal_supported) {
+ req.xo_cal_data_valid = 1;
+ req.xo_cal_data = ar_snoc->xo_cal_data;
+ }
+
ret = qmi_txn_init(&qmi->qmi_hdl, &txn, wlfw_cal_report_resp_msg_v01_ei,
&resp);
if (ret < 0)
@@ -636,6 +642,7 @@ ath10k_qmi_ind_register_send_sync_msg(struct ath10k_qmi *qmi)
struct wlfw_ind_register_resp_msg_v01 resp = {};
struct wlfw_ind_register_req_msg_v01 req = {};
struct ath10k *ar = qmi->ar;
+ struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
struct qmi_txn txn;
int ret;
@@ -646,6 +653,11 @@ ath10k_qmi_ind_register_send_sync_msg(struct ath10k_qmi *qmi)
req.msa_ready_enable_valid = 1;
req.msa_ready_enable = 1;
+ if (ar_snoc->xo_cal_supported) {
+ req.xo_cal_enable_valid = 1;
+ req.xo_cal_enable = 1;
+ }
+
ret = qmi_txn_init(&qmi->qmi_hdl, &txn,
wlfw_ind_register_resp_msg_v01_ei, &resp);
if (ret < 0)
@@ -20,6 +20,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include "ce.h"
@@ -1189,6 +1190,15 @@ static int ath10k_snoc_resource_init(struct ath10k *ar)
ar_snoc->ce_irqs[i].irq_line = res->start;
}
+ ret = device_property_read_u32(&pdev->dev, "xo-cal-data",
+ &ar_snoc->xo_cal_data);
+ ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc xo-cal-data return %d\n", ret);
+ if (ret == 0) {
+ ar_snoc->xo_cal_supported = true;
+ ath10k_dbg(ar, ATH10K_DBG_SNOC, "xo cal data %x\n",
+ ar_snoc->xo_cal_data);
+ }
+
out:
return ret;
}
@@ -91,6 +91,8 @@ struct ath10k_snoc {
struct ath10k_clk_info *clk;
struct ath10k_qmi *qmi;
unsigned long int flags;
+ bool xo_cal_supported;
+ u32 xo_cal_data;
};
static inline struct ath10k_snoc *ath10k_snoc_priv(struct ath10k *ar)
PMIC XO is the clock source for wifi rf clock in integrated wifi chipset ex: WCN3990. Due to board layout errors XO frequency drifts can cause wifi rf clock inaccuracy. XO calibration test tree in Factory Test Mode is used to find the best frequency offset(for example +/-2KHz )by programming XO trim register. This ensure system clock stays within required 20 ppm WLAN rf clock. Retrieve the xo trim offset via system firmware (e.g., device tree), especially in the case where the device doesn't have a useful EEPROM on which to store the calibrated XO offset (e.g., for integrated Wifi). Calibrated XO offset is sent to fw, which compensate the clock drift by programing the XO trim register. Signed-off-by: Govind Singh <govinds@codeaurora.org> --- drivers/net/wireless/ath/ath10k/qmi.c | 12 ++++++++++++ drivers/net/wireless/ath/ath10k/snoc.c | 10 ++++++++++ drivers/net/wireless/ath/ath10k/snoc.h | 2 ++ 3 files changed, 24 insertions(+)