@@ -187,6 +187,8 @@ struct qmp_phy_init_tbl {
.in_layout = 1, \
}
+#define QPHY_REG_INVAL 0xffffffffu
+
/* set of registers with offsets different per-PHY */
enum qphy_reg_layout {
/* Common block control registers */
@@ -676,15 +678,18 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL],
SERDES_START | PCS_START);
- status = serdes + cfg->regs[QPHY_COM_PCS_READY_STATUS];
- mask = cfg->mask_com_pcs_ready;
-
- ret = readl_poll_timeout(status, val, (val & mask), 10,
- PHY_INIT_COMPLETE_TIMEOUT);
- if (ret) {
- dev_err(qmp->dev,
- "phy common block init timed-out\n");
- goto err_com_init;
+ if (cfg->regs[QPHY_COM_PCS_READY_STATUS] != QPHY_REG_INVAL) {
+ status = serdes + cfg->regs[QPHY_COM_PCS_READY_STATUS];
+ mask = cfg->mask_com_pcs_ready;
+
+ ret = readl_poll_timeout(status, val, (val & mask), 10,
+ PHY_INIT_COMPLETE_TIMEOUT);
+ if (ret) {
+ dev_err(qmp->dev,
+ "%s: phy common block init timed-out\n",
+ __func__);
+ goto err_com_init;
+ }
}
}
In some implementations of the QMP phy, some registers might not be present. Provide a way identify such registers and not access those registers. Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org> --- drivers/phy/qualcomm/phy-qcom-qmp.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-)