6.6-stable review patch. If anyone has any objections, please let me know.
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From: Andrzej Kacprowski Andrzej.Kacprowski@intel.com
commit eb0d253ff9c74dee30aa92fe460b825eb28acd73 upstream.
There is no point in requesting 1 tile on VPU40xx as the FW will probably need more tiles to run workloads, so it will have to reconfigure PLL anyway. Don't enable any tiles and allow the FW to perform initial tile configuration.
This improves NPU boot stability as the tiles are always enabled only by the FW from the same initial state.
Fixes: 79cdc56c4a54 ("accel/ivpu: Add initial support for VPU 4") Cc: stable@vger.kernel.org Signed-off-by: Andrzej Kacprowski Andrzej.Kacprowski@intel.com Signed-off-by: Jacek Lawrynowicz jacek.lawrynowicz@linux.intel.com Reviewed-by: Jeffrey Hugo quic_jhugo@quicinc.com Link: https://patchwork.freedesktop.org/patch/msgid/20240220131624.1447813-1-jacek... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/accel/ivpu/ivpu_hw_40xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c b/drivers/accel/ivpu/ivpu_hw_40xx.c index 1c995307c113..a1523d0b1ef3 100644 --- a/drivers/accel/ivpu/ivpu_hw_40xx.c +++ b/drivers/accel/ivpu/ivpu_hw_40xx.c @@ -24,7 +24,7 @@ #define SKU_HW_ID_SHIFT 16u #define SKU_HW_ID_MASK 0xffff0000u
-#define PLL_CONFIG_DEFAULT 0x1 +#define PLL_CONFIG_DEFAULT 0x0 #define PLL_CDYN_DEFAULT 0x80 #define PLL_EPP_DEFAULT 0x80 #define PLL_REF_CLK_FREQ (50 * 1000000)