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FMC DEL 1ns 4cha - Software
Commit 7921d497 authored by Alessandro Rubini's avatar Alessandro Rubini
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kernel/fd-irq: properly configure the fifo irq register 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent e0ff432c
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Showing with 9 additions and 2 deletions
kernel/fd-irq.c
View file @ 7921d497
......@@ -288,8 +288,15 @@ int fd_irq_init(struct fd_dev *fd)
fmc->op->irq_request(fmc, fd_irq_handler, "fine-delay",
IRQF_SHARED);
/* Then, configure hardware: fd, then vic, finally carrier */
/*
* Then, configure the hardware: first fine delay,
* then vic, and finally the carrier
*/
/* current VHDL has a buglet: timeout is 8ns, not 1ms each */
fd_writel(fd, FD_TSBIR_TIMEOUT_W(10) /* should be ms */
| FD_TSBIR_THRESHOLD_W(15), /* samples */
FD_REG_TSBIR);
fd_writel(fd, FD_EIC_IER_TS_BUF_NOTEMPTY, FD_REG_EIC_IER);
/* 4us edge emulation timer (counts in 16ns steps) */
......
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