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| author | Lubomir Rintel <lkundrak@v3.sk> | 2019-03-19 22:32:24 +0100 |
|---|---|---|
| committer | Lubomir Rintel <lkundrak@v3.sk> | 2019-04-19 07:28:33 +0200 |
| commit | c053027369bf3b7a50d21d487d0170d2d7bb7f44 (patch) | |
| tree | a666fb90e86ea88c42ce7150daddc174cb9fe5bf | |
| parent | 538fea89d8f45297753c5c3051a1da7f8ea18f01 (diff) | |
| download | openfirmware-c053027369bf3b7a50d21d487d0170d2d7bb7f44.tar.gz | |
kb3700: make sure the SSP's TXFIXO is empty on close
The Linux driver would get confused if it wasn't empty.
| -rw-r--r-- | dev/olpc/kb3700/spicmd.fth | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/dev/olpc/kb3700/spicmd.fth b/dev/olpc/kb3700/spicmd.fth index f8429341..9fa2b2ee 100644 --- a/dev/olpc/kb3700/spicmd.fth +++ b/dev/olpc/kb3700/spicmd.fth @@ -349,6 +349,11 @@ defer upstream set-ack open-count 1 = if ssp-base h# 1000 " map-out" $call-parent 0 is ssp-base + + \ Reset the SSP3. There doesn't seem to be any other + \ way to drain the TXFIFO and we need to ensure we didn't + \ leave garbage there. + ssp3-clk-on then open-count 1- 0 max to open-count ; |