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warmboot: more code, through power on i2c5

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This commit is contained in:
Michael Scire
2018-12-17 16:34:41 -08:00
parent a4ce50ffd5
commit b419c0df29
3 changed files with 32 additions and 0 deletions
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23
exosphere/lp0fw/src/cluster.c
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@@ -61,6 +61,29 @@ void cluster_initialize_cpu(void) {
APBDEV_PMC_DPD_SAMPLE_0 = 0;
timer_wait(10);
/* Configure UART2 via GPIO controller 2 G. */
MAKE_REG32(0x6000D108) |= 4; /* GPIO_CNF */
MAKE_REG32(0x6000D118) |= 4; /* GPIO_OE */
MAKE_REG32(0x6000D128) &= ~4; /* GPIO_OUT */
/* Set CL_DVFS RSVD0 + TRISTATE, read register to make it stick. */
PINMUX_AUX_DVFS_PWM_0 = 0x11;
(void)PINMUX_AUX_DVFS_PWM_0;
/* Configure I2C. */
PINMUX_AUX_PWR_I2C_SCL_0 = 0x40;
PINMUX_AUX_PWR_I2C_SDA_0 = 0x40;
/* Enable clock to CL_DVFS, and set its source/divider. */
CLK_RST_CONTROLLER_CLK_ENB_W_SET_0 = 0x08000000;
CLK_RST_CONTROLLER_CLK_SOURCE_DVFS_REF_0 = 0xE;
CLK_RST_CONTROLLER_CLK_SOURCE_DVFS_SOC_0 = 0xE;
/* Power on I2C5, wait 5 us. */
CLK_RST_CONTROLLER_CLK_ENB_H_SET_0 = 0x8000;
CLK_RST_CONTROLLER_RST_DEV_H_SET_0 = 0x8000;
timer_wait(5);
/* TODO: This function is enormous */
}