[PATCH 26/42] imx9: clock: config arm alt root to 500mhz

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

Config the A55 alt root clock to 500MHz(LD mode frequency)
by default. Normally, this clock root is only used as an
intermediate clock soure for A55 core/dsu when change the
ARM PLL frequency.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 arch/arm/mach-imx/imx9/clock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/mach-imx/imx9/clock.c b/arch/arm/mach-imx/imx9/clock.c
index 3faab0685f7..957f80fce2e 100644
--- a/arch/arm/mach-imx/imx9/clock.c
+++ b/arch/arm/mach-imx/imx9/clock.c
@@ -727,6 +727,12 @@ struct imx_clk_setting imx_clk_settings[] = {
 };
 #else
 struct imx_clk_setting imx_clk_settings[] = {
+	/*
+	 * Set A55 clk to 500M. This clock root is normally used as intermediate
+	 * clock source for A55 core/DSU when doing ARM PLL reconfig. set it to
+	 * 500MHz(LD mode frequency) should be ok.
+	 */
+	{ARM_A55_CLK_ROOT, SYS_PLL_PFD0, 2},
 	/* Set A55 periphal to 333M */
 	{ARM_A55_PERIPH_CLK_ROOT, SYS_PLL_PFD0, 3},
 	/* Set A55 mtr bus to 133M */
-- 
2.40.0