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soc: arm: nxp: kinetis: k2x: remove MPU support

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Remove (disabled) MPU support for the NXP Kinetis K2x. At least the
MK22F51212, which is the only K2x supported by Zephyr so far, does not
contain an MPU.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2021-05-04 13:03:18 +02:00 • committed by Kumar Gala
commit eb9cf9e0dc
3 changed files with 0 additions and 28 deletions
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7
dts/arm/nxp/nxp_k2x.dtsi
View file

@ -52,13 +52,6 @@
};
soc {
mpu: mpu@4000d000 {
compatible = "nxp,k22f-mpu";
reg = <0x4000d000 0x824>;
status = "disabled";
};
mcg: clock-controller@40064000 {
compatible = "nxp,kinetis-mcg";
reg = <0x40064000 0xd>;

1
soc/arm/nxp_kinetis/k2x/Kconfig.series
View file

@ -13,7 +13,6 @@ config SOC_SERIES_KINETIS_K2X
select CPU_CORTEX_M4
select CPU_CORTEX_M_HAS_DWT
select SOC_FAMILY_KINETIS
select CPU_HAS_NXP_MPU
select CLOCK_CONTROL
help
Enable support for Kinetis K2x MCU series

20
soc/arm/nxp_kinetis/k2x/soc.c
View file

@ -123,11 +123,6 @@ static int fsl_frdm_k22f_init(const struct device *arg)
ARG_UNUSED(arg);
unsigned int oldLevel; /* old interrupt lock level */
#if !defined(CONFIG_ARM_MPU)
#if defined(SYSMPU)
uint32_t temp_reg;
#endif
#endif /* !CONFIG_ARM_MPU */
/* disable interrupts */
oldLevel = irq_lock();
@ -135,21 +130,6 @@ static int fsl_frdm_k22f_init(const struct device *arg)
/* release I/O power hold to allow normal run state */
PMC->REGSC |= PMC_REGSC_ACKISO_MASK;
#if !defined(CONFIG_ARM_MPU)
/*
* Disable memory protection and clear slave port errors.
* Note that the K22F does not implement the optional ARMv7-M memory
* protection unit (MPU), specified by the architecture (PMSAv7), in the
* Cortex-M4 core. Instead, the processor includes its own MPU module.
*/
#if defined(SYSMPU)
temp_reg = SYSMPU->CESR;
temp_reg &= ~SYSMPU_CESR_VLD_MASK;
temp_reg |= SYSMPU_CESR_SPERR_MASK;
SYSMPU->CESR = temp_reg;
#endif
#endif /* !CONFIG_ARM_MPU */
/* Initialize PLL/system clock to 120 MHz */
clock_init();