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boards/arm64/bcm2711/raspberrypi-4b: Fix GPIO

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* Fix GPIO unspecified behavior on some GPIO ports.
* Fix GPIO undefined behavior caused by uncleared set or reset bits.

Signed-off-by: Saurav Pal <resyfer.dev@gmail.com>
This commit is contained in:
Saurav Pal
2026-03-08 13:14:20 +05:30
committed by Matteo Golin
parent f851e09cab
commit 8ddcf81484
2 changed files with 8 additions and 13 deletions
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2
arch/arm64/include/bcm2711/chip.h
View File

@@ -75,6 +75,8 @@
#if defined(CONFIG_RPI4B_RAM_4GB) || defined(CONFIG_RPI4B_RAM_8GB)
#define CONFIG_RAMBANK1_SIZE GB(4) - MB(64)
#elif defined(CONFIG_RPI4B_RAM_2GB)
#define CONFIG_RAMBANK1_SIZE GB(2) - MB(64)
#endif /* defined(CONFIG_RPI4B_RAM_4GB) || defined(CONFIG_RPI4B_RAM_8GB) */
/* The 8GB version begins to use a second RAM bank.

19
arch/arm64/src/bcm2711/bcm2711_gpio.c
View File

@@ -380,22 +380,22 @@ void bcm2711_gpio_set_func(uint32_t gpio, enum bcm2711_gpio_func_e func)
value = (g_fsel_map[func] << ((gpio - 10) * 3));
modreg32(value, value, BCM_GPIO_GPFSEL1);
}
else if (gpio <= 29 && gpio > 20)
else if (gpio <= 29 && gpio > 19)
{
value = (g_fsel_map[func] << ((gpio - 20) * 3));
modreg32(value, value, BCM_GPIO_GPFSEL2);
}
else if (gpio <= 39 && gpio > 30)
else if (gpio <= 39 && gpio > 29)
{
value = (g_fsel_map[func] << ((gpio - 30) * 3));
modreg32(value, value, BCM_GPIO_GPFSEL3);
}
else if (gpio <= 49 && gpio > 40)
else if (gpio <= 49 && gpio > 39)
{
value = (g_fsel_map[func] << ((gpio - 40) * 3));
modreg32(value, value, BCM_GPIO_GPFSEL4);
}
else if (gpio <= 57 && gpio > 50)
else if (gpio <= 57 && gpio > 49)
{
value = (g_fsel_map[func] << ((gpio - 50) * 3));
modreg32(value, value, BCM_GPIO_GPFSEL5);
@@ -418,15 +418,8 @@ void bcm2711_gpio_set_func(uint32_t gpio, enum bcm2711_gpio_func_e func)
void bcm2711_gpio_pin_set(uint32_t gpio, bool set)
{
DEBUGASSERT(gpio < BCM_GPIO_NUM);
if (set)
{
bcm2711_gpio_help_set(gpio, BCM_GPIO_GPSET0, BCM_GPIO_GPSET0, true);
}
else
{
bcm2711_gpio_help_set(gpio, BCM_GPIO_GPCLR0, BCM_GPIO_GPCLR0, true);
}
bcm2711_gpio_help_set(gpio, BCM_GPIO_GPSET0, BCM_GPIO_GPSET1, set);
bcm2711_gpio_help_set(gpio, BCM_GPIO_GPCLR0, BCM_GPIO_GPCLR1, !set);
}
/****************************************************************************