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soc: arm: nxp: fix USB w/ SPEED_OPTIMIZATIONS

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Fix USB w/ SPEED_OPTIMIZATIONS for LPC55xxx SoCs
Root cause was non-volatile register access,
which could get optimized by the compiler
(by -fschedule-insns, specifically)

Signed-off-by: Maxime Vincent <maxime@veemax.be>
This commit is contained in:
Maxime Vincent 2024-09-13 10:51:57 +02:00 • committed by Anas Nashif
commit f86f98fa2e
1 changed files with 3 additions and 3 deletions
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6
soc/nxp/lpc/lpc55xxx/soc.c
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@ -228,7 +228,7 @@ static ALWAYS_INLINE void clock_init(void)
* According to reference mannual, device mode setting has to be set by access * According to reference mannual, device mode setting has to be set by access
* usb host register * usb host register
*/ */
*((uint32_t *)(USBFSH_BASE + 0x5C)) |= USBFSH_PORTMODE_DEV_ENABLE_MASK; USBFSH->PORTMODE |= USBFSH_PORTMODE_DEV_ENABLE_MASK;
/* disable usb0 host clock */ /* disable usb0 host clock */
CLOCK_DisableClock(kCLOCK_Usbhsl0); CLOCK_DisableClock(kCLOCK_Usbhsl0);
@ -244,12 +244,12 @@ static ALWAYS_INLINE void clock_init(void)
/* enable usb1 host clock */ /* enable usb1 host clock */
CLOCK_EnableClock(kCLOCK_Usbh1); CLOCK_EnableClock(kCLOCK_Usbh1);
/* Put PHY powerdown under software control */ /* Put PHY powerdown under software control */
*((uint32_t *)(USBHSH_BASE + 0x50)) = USBHSH_PORTMODE_SW_PDCOM_MASK; USBHSH->PORTMODE = USBHSH_PORTMODE_SW_PDCOM_MASK;
/* /*
* According to reference manual, device mode setting has to be set by * According to reference manual, device mode setting has to be set by
* access usb host register * access usb host register
*/ */
*((uint32_t *)(USBHSH_BASE + 0x50)) |= USBHSH_PORTMODE_DEV_ENABLE_MASK; USBHSH->PORTMODE |= USBHSH_PORTMODE_DEV_ENABLE_MASK;
/* disable usb1 host clock */ /* disable usb1 host clock */
CLOCK_DisableClock(kCLOCK_Usbh1); CLOCK_DisableClock(kCLOCK_Usbh1);