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RP2040: clock control: support PLL On/Off 

Simple improvement that adds control over SYS and USB PLLs in RPi Pico
(RP2040) MCU.

Signed-off-by: Krzysztof Gawryś <kgawrys@concisesoftware.com>
This commit is contained in:
Krzysztof Gawryś 2024-05-20 11:09:52 +02:00 committed by Anas Nashif
parent 4f89e3ca35
commit dfcc3b6db4
1 changed files with 20 additions and 4 deletions
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24
drivers/clock_control/clock_control_rpi_pico.c
View File

@ -488,13 +488,21 @@ static int clock_control_rpi_pico_on(const struct device *dev, clock_control_sub
{
const struct clock_control_rpi_pico_config *config = dev->config;
enum rpi_pico_clkid clkid = (enum rpi_pico_clkid)sys;
clocks_hw_t *clocks_regs = config->clocks_regs;
if (rpi_pico_is_valid_clock_index(clkid) < 0) {
return -EINVAL;
}
hw_set_bits(&clocks_regs->clk[clkid].ctrl, CTRL_ENABLE_BITS);
switch (clkid) {
case rpi_pico_clkid_pll_sys:
hw_clear_bits(&config->pll_sys_regs->pwr, PLL_PWR_BITS);
break;
case rpi_pico_clkid_pll_usb:
hw_clear_bits(&config->pll_usb_regs->pwr, PLL_PWR_BITS);
break;
default:
hw_set_bits(&config->clocks_regs->clk[clkid].ctrl, CTRL_ENABLE_BITS);
}
return 0;
}
@ -503,13 +511,21 @@ static int clock_control_rpi_pico_off(const struct device *dev, clock_control_su
{
const struct clock_control_rpi_pico_config *config = dev->config;
enum rpi_pico_clkid clkid = (enum rpi_pico_clkid)sys;
clocks_hw_t *clocks_regs = config->clocks_regs;
if (rpi_pico_is_valid_clock_index(clkid) < 0) {
return -EINVAL;
}
hw_clear_bits(&clocks_regs->clk[clkid].ctrl, CTRL_ENABLE_BITS);
switch (clkid) {
case rpi_pico_clkid_pll_sys:
hw_set_bits(&config->pll_sys_regs->pwr, PLL_PWR_BITS);
break;
case rpi_pico_clkid_pll_usb:
hw_set_bits(&config->pll_usb_regs->pwr, PLL_PWR_BITS);
break;
default:
hw_clear_bits(&config->clocks_regs->clk[clkid].ctrl, CTRL_ENABLE_BITS);
}
return 0;
}