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bdk: bpmp: add state set function

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Some states are controlled via software. So add a function for that.
This commit is contained in:
CTCaer 2024-10-04 21:54:58 +03:00
parent 1a98e3a702
commit edf00d8e51
2 changed files with 19 additions and 0 deletions
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8
bdk/soc/bpmp.c
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@ -237,6 +237,7 @@ void bpmp_clk_rate_relaxed(bool enable)
// APB clock affects RTC, PWM, MEMFETCH, APE, USB, SOR PWM,
// I2C host, DC/DSI/DISP. UART gives extra stress.
// 92: 100% success ratio. 93-94: 595-602MHz has 99% success ratio. 95: 608MHz less.
// APB clock max is supposed to be 204 MHz though.
static const u8 pll_divn[] = {
0, // BPMP_CLK_NORMAL: 408MHz 0% - 136MHz APB.
85, // BPMP_CLK_HIGH_BOOST: 544MHz 33% - 136MHz APB.
@ -300,6 +301,13 @@ void bpmp_clk_rate_set(bpmp_freq_t fid)
}
}
// State is reset to RUN on any clock or source set via SW.
void bpmp_state_set(bpmp_state_t state)
{
u32 cfg = CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) & ~0xF0000000u;
CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) = cfg | (state << 28u);
}
// The following functions halt BPMP to reduce power while sleeping.
// They are not as accurate as RTC at big values but they guarantee time+ delay.
void bpmp_usleep(u32 us)

11
bdk/soc/bpmp.h
View file

@ -54,6 +54,16 @@ typedef enum
BPMP_CLK_MAX
} bpmp_freq_t;
typedef enum
{
BPMP_STATE_STANDBY = 0, // 32KHz.
BPMP_STATE_IDLE = 1,
BPMP_STATE_RUN = 2,
BPMP_STATE_IRQ = BIT(2),
BPMP_STATE_FIQ = BIT(3),
} bpmp_state_t;
#define BPMP_CLK_LOWEST_BOOST BPMP_CLK_HIGH2_BOOST
#define BPMP_CLK_LOWER_BOOST BPMP_CLK_SUPER_BOOST
#define BPMP_CLK_DEFAULT_BOOST BPMP_CLK_HYPER_BOOST
@ -65,6 +75,7 @@ void bpmp_mmu_disable();
void bpmp_clk_rate_relaxed(bool enable);
void bpmp_clk_rate_get();
void bpmp_clk_rate_set(bpmp_freq_t fid);
void bpmp_state_set(bpmp_state_t state);
void bpmp_usleep(u32 us);
void bpmp_msleep(u32 ms);
void bpmp_halt();