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ARM: nxp_imx: rt10xx: add XTAL and RTC_XTAL DT clocks 

There are two external clocks driving i.MX RT 10xx SoCs: XTAL and
RTC_XTAL. Add "fixed-clock" DT nodes for each. Update also "nxp,imx-ccm"
binding, so that CCM (Clock Control Module) peripheral consumes those
clocks by "xtal" and "rtc-xtal" names.

Signed-off-by: Marcin Niestroj <m.niestroj@emb.dev>
This commit is contained in:
Marcin Niestroj 2022-08-31 22:43:34 +02:00 committed by Mahesh Mahadevan
parent ce08b40bfa
commit 356960bcb5
2 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
dts/arm/nxp/nxp_rt10xx.dtsi
View File

@ -48,6 +48,18 @@
#clock-cells = <0>;
};
xtal: clock-xtal {
compatible = "fixed-clock";
clock-frequency = <24000000>;
#clock-cells = <0>;
};
rtc_xtal: clock-rtc-xtal {
compatible = "fixed-clock";
clock-frequency = <32768>;
#clock-cells = <0>;
};
soc {
flexram: flexram@400b0000 {
compatible = "nxp,imx-flexram";
@ -232,6 +244,8 @@
ccm: ccm@400fc000 {
compatible = "nxp,imx-ccm";
reg = <0x400fc000 0x4000>;
clocks = <&xtal>, <&rtc_xtal>;
clock-names = "xtal", "rtc-xtal";
#clock-cells = <3>;
};

8
soc/arm/nxp_imx/rt/soc_rt10xx.c
View File

@ -21,6 +21,8 @@
#include "usb_dc_mcux.h"
#endif
#define CCM_NODE DT_INST(0, nxp_imx_ccm)
#ifdef CONFIG_INIT_ARM_PLL
/* ARM PLL configuration for RUN mode */
const clock_arm_pll_config_t armPllConfig = {
@ -103,8 +105,10 @@ static ALWAYS_INLINE void clock_init(void)
/* Boot ROM did initialize the XTAL, here we only sets external XTAL
* OSC freq
*/
CLOCK_SetXtalFreq(24000000U);
CLOCK_SetRtcXtalFreq(32768U);
CLOCK_SetXtalFreq(DT_PROP(DT_CLOCKS_CTLR_BY_NAME(CCM_NODE, xtal),
clock_frequency));
CLOCK_SetRtcXtalFreq(DT_PROP(DT_CLOCKS_CTLR_BY_NAME(CCM_NODE, rtc_xtal),
clock_frequency));
/* Set PERIPH_CLK2 MUX to OSC */
CLOCK_SetMux(kCLOCK_PeriphClk2Mux, 0x1);