We do some limited clock tree configuration in PBL and do the proper
configuration later in the barebox proper drivers.
The clock tree of the i.MX8MP is a bit different though than that of the
i.MX8MM and i.MX8MN and we'll want to add some more SoC-specific
configuration in the follow-up commit. Prepare for that by giving the
function a cpu_type parameter that can be checked.
Note that we can't use imx_cpu_type here, because it has not been set
yet.
No functional change intended.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
arch/arm/mach-imx/imx8m.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-imx/imx8m.c b/arch/arm/mach-imx/imx8m.c
index 52e42ee9ef63..d798c52c6a6e 100644
--- a/arch/arm/mach-imx/imx8m.c
+++ b/arch/arm/mach-imx/imx8m.c
@@ -56,8 +56,9 @@ void imx8m_ccgr_clock_disable(int index)
#define IMX8MM_CCM_ANALOG_SYS_PLL2_GEN_CTRL 0x104
#define IMX8MM_CCM_ANALOG_SYS_PLL3_GEN_CTRL 0x114
-static void __imx8m_early_clock_init(unsigned long pll3_freq) /* and later */
+static void __imx8m_early_clock_init(int cpu_type)
{
+ unsigned long pll3_freq;
void __iomem *ana = IOMEM(MX8M_ANATOP_BASE_ADDR);
void __iomem *ccm = IOMEM(MX8M_CCM_BASE_ADDR);
u32 val;
@@ -99,6 +100,11 @@ static void __imx8m_early_clock_init(unsigned long pll3_freq) /* and later */
IMX8M_CCM_TARGET_ROOTn_MUX(3));
imx8m_ccgr_clock_enable(IMX8M_CCM_CCGR_GIC);
+ if (cpu_type == IMX_CPU_IMX8MN)
+ pll3_freq = 600000000UL;
+ else
+ pll3_freq = 750000000UL;
+
/* Configure SYS_PLL3 */
clk_pll1416x_early_set_rate(ana + IMX8MM_CCM_ANALOG_SYS_PLL3_GEN_CTRL,
pll3_freq, 25000000UL);
@@ -126,17 +132,17 @@ static void __imx8m_early_clock_init(unsigned long pll3_freq) /* and later */
void imx8mm_early_clock_init(void)
{
- __imx8m_early_clock_init(750000000UL);
+ __imx8m_early_clock_init(IMX_CPU_IMX8MM);
}
void imx8mn_early_clock_init(void)
{
- __imx8m_early_clock_init(600000000UL);
+ __imx8m_early_clock_init(IMX_CPU_IMX8MN);
}
void imx8mp_early_clock_init(void)
{
- __imx8m_early_clock_init(750000000UL);
+ __imx8m_early_clock_init(IMX_CPU_IMX8MP);
}
--
2.39.2
