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From: Giulio Benetti <giulio.benetti@benettiengineering.com>
To: linux-sunxi@lists.linux.dev
Subject: s-jtag on A33
Date: Fri, 18 Jun 2021 23:55:21 +0200	[thread overview]
Message-ID: <c366547a-a19f-2673-d3c8-15771f565256@benettiengineering.com> (raw)

Hello All,

have anyone accessed A33 jtag through s-jtag(PL4-PL7) port? In u-boot 
present in sd-card on SDC0 I've configured those pins as jtag mux(both 
tried 2 and 3 as values), but while Trace32 answers on jtag(PF port) 
here it doesn't answer. I've double-checked with md.l under u-boot and 
the values are correct, it seems something is missing.

So I've tried looking for PRCM if it has a jtag gate/reset but I haven't 
found it except the ones for R_PIO etc. I also have a doubt that s-jtag 
is dedicated to AR100 co-processor, maybe?

Kind regards
-- 
Giulio Benetti
Benetti Engineering sas

             reply	other threads:[~2021-06-18 21:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-18 21:55 Giulio Benetti [this message]
2021-06-19  5:14 ` s-jtag on A33 Icenowy Zheng
2021-06-19  8:47   ` Giulio Benetti
2021-06-18 22:03 S-JTAG " Giulio Benetti
2021-06-18 22:09 Giulio Benetti

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