[PATCH v3 2/4] clk: qcom: clear div mask before assigning a new divider

[Volodymyr Babchuk]

The current behaviour does a bitwise OR of the previous and new
divider values, this is wrong as some bits maybe be set already. We
need to clear all the divider bits before applying new ones.

This fixes potential issue with 1Gbit ethernet on SA8155P-ADP boards.

Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk at epam.com>
Reviewed-by: Caleb Connolly <caleb.connolly at linaro.org>

---

(no changes since v2)

Changes in v2:
 - Reworded the commit message
 - Added Caleb's R-b tag

 drivers/clk/qcom/clock-qcom.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/clock-qcom.c b/drivers/clk/qcom/clock-qcom.c
index 7c683e5192..729d190c54 100644
--- a/drivers/clk/qcom/clock-qcom.c
+++ b/drivers/clk/qcom/clock-qcom.c
@@ -117,7 +117,8 @@ void clk_rcg_set_rate_mnd(phys_addr_t base, const struct bcr_regs *regs,
 
 	/* setup src select and divider */
 	cfg  = readl(base + regs->cfg_rcgr);
-	cfg &= ~(CFG_SRC_SEL_MASK | CFG_MODE_MASK | CFG_HW_CLK_CTRL_MASK);
+	cfg &= ~(CFG_SRC_SEL_MASK | CFG_MODE_MASK | CFG_HW_CLK_CTRL_MASK |
+		 CFG_SRC_DIV_MASK);
 	cfg |= source & CFG_SRC_SEL_MASK; /* Select clock source */
 
 	if (div)
-- 
2.43.0