diff options
| author | Oded Gabbay <ogabbay@kernel.org> | 2021-02-06 19:34:59 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-02-08 18:20:08 +0200 |
| commit | da5dfbb97a82ff698e1dc7b229d4d4f5759dad2b (patch) | |
| tree | 9f230830064c2d32488b6b10b531fa785b00c559 /drivers/misc | |
| parent | 6df50d274363aa189a31435024339b781a6e32a9 (diff) | |
habanalabs/gaudi: don't enable clock gating on DMA5
Graph Compiler uses DMA5 in a non-standard way and it requires the
driver to disable clock gating on that DMA.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/gaudi/gaudi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c index 35342edd4a02..9152242778f5 100644 --- a/drivers/misc/habanalabs/gaudi/gaudi.c +++ b/drivers/misc/habanalabs/gaudi/gaudi.c @@ -3460,6 +3460,12 @@ static void gaudi_set_clock_gating(struct hl_device *hdev) enable = !!(hdev->clock_gating_mask & (BIT_ULL(gaudi_dma_assignment[i]))); + /* GC sends work to DMA engine through Upper CP in DMA5 so + * we need to not enable clock gating in that DMA + */ + if (i == GAUDI_HBM_DMA_4) + enable = 0; + qman_offset = gaudi_dma_assignment[i] * DMA_QMAN_OFFSET; WREG32(mmDMA0_QM_CGM_CFG1 + qman_offset, enable ? QMAN_CGM1_PWR_GATE_EN : 0); |