diff mbox series

[V3,04/15] clk: imx: fracn-gppll: fix fractional part of PLL getting lost

Message ID 20240607133347.3291040-5-peng.fan@oss.nxp.com (mailing list archive)
State Awaiting Upstream, archived
Headers show
Series clk: imx: misc update/fix | expand

Commit Message

Peng Fan (OSS) June 7, 2024, 1:33 p.m. UTC
From: Pengfei Li <pengfei.li_1@nxp.com>

Fractional part of PLL gets lost after re-enabling the PLL. the
MFN can NOT be automatically loaded when doing frac PLL enable/disable,
So when re-enable PLL, configure mfn explicitly.

Fixes: 1b26cb8a77a4 ("clk: imx: support fracn gppll")
Signed-off-by: Pengfei Li <pengfei.li_1@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
 drivers/clk/imx/clk-fracn-gppll.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series


diff --git a/drivers/clk/imx/clk-fracn-gppll.c b/drivers/clk/imx/clk-fracn-gppll.c
index 44462ab50e51..1becba2b62d0 100644
--- a/drivers/clk/imx/clk-fracn-gppll.c
+++ b/drivers/clk/imx/clk-fracn-gppll.c
@@ -291,6 +291,10 @@  static int clk_fracn_gppll_prepare(struct clk_hw *hw)
 	if (val & POWERUP_MASK)
 		return 0;
+	if (pll->flags & CLK_FRACN_GPPLL_FRACN)
+		writel_relaxed(readl_relaxed(pll->base + PLL_NUMERATOR),
+			       pll->base + PLL_NUMERATOR);
 	writel_relaxed(val, pll->base + PLL_CTRL);