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iPod Classic: HW initialization for RB

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Do not rely on a bootloader initializing the HW, RB initializes
and configures GPIO, I2C, and PMU at startup.

Change-Id: If7f856b1f345f63de584aa4e4fc22d130cd66c80
This commit is contained in:
Cástor Muñoz 2016-05-22 00:43:18 +02:00
parent e863f9a0ce
commit 3f17745930
9 changed files with 25 additions and 23 deletions
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9
firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c
View file

@ -143,7 +143,9 @@ void pmu_write_rtc(unsigned char* buffer)
pmu_write_multiple(0x59, 7, buffer);
}
#ifdef BOOTLOADER
/*
* preinit
*/
int pmu_rd_multiple(int address, int count, unsigned char* buffer)
{
return i2c_rd(0, 0xe6, address, count, buffer);
@ -225,7 +227,9 @@ void pmu_preinit(void)
/* AUTOLDO (HDD): 3400 mV, disabled,
limit = 1000 mA (40mA*0x19), limit always active */
PCF5063X_REG_AUTOOUT, 0x6f,
#ifdef BOOTLOADER
PCF5063X_REG_AUTOENA, 0x0,
#endif
PCF5063X_REG_AUTOCTL, 0x0,
PCF5063X_REG_AUTOMXC, 0x59,
@ -257,7 +261,9 @@ void pmu_preinit(void)
PCF5063X_REG_GPOCFG, 0x1,
/* LED converter OFF, overvoltage protection enabled,
OCP limit is 500 mA, led_dimstep = 16*0x6/32768 */
#ifdef BOOTLOADER
PCF5063X_REG_LEDENA, 0x0,
#endif
PCF5063X_REG_LEDCTL, 0x5,
PCF5063X_REG_LEDDIM, 0x6,
@ -274,4 +280,3 @@ void pmu_preinit(void)
pmu_rd_multiple(PCF5063X_REG_INT1, 5, rd_buf);
pmu_rd(PCF50635_REG_INT6);
}
#endif /* BOOTLOADER */

2
firmware/target/arm/s5l8702/ipod6g/pmu-target.h
View file

@ -77,12 +77,12 @@ void pmu_read_rtc(unsigned char* buffer);
void pmu_write_rtc(unsigned char* buffer);
void pmu_hdd_power(bool on);
void pmu_preinit(void);
#ifdef BOOTLOADER
unsigned char pmu_rd(int address);
int pmu_wr(int address, unsigned char val);
int pmu_rd_multiple(int address, int count, unsigned char* buffer);
int pmu_wr_multiple(int address, int count, unsigned char* buffer);
void pmu_preinit(void);
#endif
#endif /* __PMU_TARGET_H__ */