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AM335x touch / ADC registers

Other Parts Discussed in Thread: SYSCONFIG

I have some working touch screen code that defines the following registers:

typedef volatile struct {

UINT32 revision; //0x0

UINT32 resv1[3];

UINT32 sysconfig; //0x10

UINT32 resv2[3];

UINT32 irq_eoi; //0x20

UINT32 irq_status_raw; //0x24

UINT32 irq_status; //0x28

UINT32 irq_enable_set; //0x2c

UINT32 irq_enable_clr; //0x30

UINT32 irq_wakeup; //0x34

UINT32 dma_enable_set; //0x38

UINT32 dma_enable_clr; //0x3c

UINT32 adc_ctrl; //0x40

UINT32 adc_stat; //0x44

UINT32 adc_range; //0x48

UINT32 adc_clkdiv; //0x4c

UINT32 adc_misc; //0x50

UINT32 step_enable; //0x54

UINT32 idle_config; //0x58

UINT32 charge_stepcfg; //0x5c

UINT32 charge_delay; //0x60

TSC_ADC_STEP_CFG tsc_adc_step_cfg[16];

UINT32 fifo0_count; //0xe4

UINT32 fifo0_threshold; //0xe8

UINT32 dma0_req; //0xec

UINT32 fifo1_count; //0xf0

UINT32 fifo1_threshold; //0xf4

UINT32 dma1_req; //0xf8

UINT32 resv3; //0xfc

UINT32 fifo0_data; //0x100

UINT32 resv4[63];

UINT32 fifo1_data; //0x200

} TSCADC_REGS;

It shows an irq_eoi register at offset 20x. The code seem to write this register to zero at the end of the interrupt service routine.

This register is not defined in the TRM. I was wondering if the manual is in error or if this code may have been copied from a different BSP and just does nothing.

If so what BSP might it have come from?