diff options
| author | Ernesto Corona <ernesto.corona@intel.com> | 2021-06-02 22:04:24 +0300 |
|---|---|---|
| committer | Jae Hyun Yoo <jae.hyun.yoo@intel.com> | 2021-07-14 20:10:33 +0300 |
| commit | daee5b9f522896762be5c2423a8dc3d5d92a4f07 (patch) | |
| tree | a511a218b9598ee4ab1dc7eb97a64acc1a764341 | |
| parent | 7457b4915fa27af4c06220b2c903d5a2430dcf28 (diff) | |
| download | linux-daee5b9f522896762be5c2423a8dc3d5d92a4f07.tar.xz | |
ASD Disable JTAG Master controller output when driver is released
To avoid conflicts with other JTAG hardware probes such as XDP, ASD
must disable JTAG Master controller output when ASD connection is not
in use.
This commit fixes the output disable for AST26xx series which needs
ASPEED_JTAG_CTRL and ASPEED_JTAG_GBLCTRL to be cleared for all SW,
HW1 and HW2 modes.
Test:
1. Run jtag_test
2. Run ASD Sanity(using XDP) - Failed here before
3. Run jtag_test
4. Run ASD Sanity(using ASD)
5. Run ASD Sanity(using XDP) - Failed here before
6. ASD Sanity(using ASD)
Signed-off-by: Ernesto Corona <ernesto.corona@intel.com>
Change-Id: I4f403f4b8412ab96cee195412cc412360845b6d0
| -rw-r--r-- | drivers/jtag/jtag-aspeed.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/jtag/jtag-aspeed.c b/drivers/jtag/jtag-aspeed.c index aeb6502e5a85..727aa0a37c68 100644 --- a/drivers/jtag/jtag-aspeed.c +++ b/drivers/jtag/jtag-aspeed.c @@ -330,6 +330,7 @@ static inline void aspeed_jtag_output_disable(struct aspeed_jtag *aspeed_jtag) static inline void aspeed_jtag_output_disable_26xx(struct aspeed_jtag *aspeed_jtag) { + aspeed_jtag_write(aspeed_jtag, 0, ASPEED_JTAG_CTRL); aspeed_jtag_write(aspeed_jtag, 0, ASPEED_JTAG_GBLCTRL); } |