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warmboot: add i2c code to enable PMIC

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This commit is contained in:
Michael Scire
2018-12-17 16:48:14 -08:00
parent b419c0df29
commit 754aaecc18
4 changed files with 135 additions and 1 deletions
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9
exosphere/lp0fw/src/cluster.c
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@@ -21,6 +21,8 @@
#include "car.h"
#include "timer.h"
#include "pmc.h"
#include "misc.h"
#include "i2c.h"
#include "sysreg.h"
void cluster_initialize_cpu(void) {
@@ -79,10 +81,15 @@ void cluster_initialize_cpu(void) {
CLK_RST_CONTROLLER_CLK_SOURCE_DVFS_REF_0 = 0xE;
CLK_RST_CONTROLLER_CLK_SOURCE_DVFS_SOC_0 = 0xE;
/* Power on I2C5, wait 5 us. */
/* Power on I2C5, wait 5 us, set source + take out of reset. */
CLK_RST_CONTROLLER_CLK_ENB_H_SET_0 = 0x8000;
CLK_RST_CONTROLLER_RST_DEV_H_SET_0 = 0x8000;
timer_wait(5);
CLK_RST_CONTROLLER_CLK_SOURCE_I2C5_0 = 0x4;
CLK_RST_CONTROLLER_RST_DEV_H_CLR_0 = 0x8000;
/* Enable the PMIC. */
i2c_enable_pmic();
/* TODO: This function is enormous */
}