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[v2,3/3] drm/etnaviv: Disable SH_EU clock gating on VIPNano-Si+

Message ID 20240125-etnaviv-npu-v2-3-ba23c9a32be1@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series drm/etnaviv: Disable SH_EU clock gating on the i.MX8MP NPU | expand

Commit Message

Philipp Zabel Jan. 25, 2024, 11:07 a.m. UTC 
Disable SH_EU clock gating for the VIPNano-Si+ NPU on i.MX8MP
and for other affected core revisions.
Taken from linux-imx lf-6.1.36-2.1.0, specifically [1].

[1] https://github.com/nxp-imx/linux-imx/blob/lf-6.1.36-2.1.0/drivers/mxc/gpu-viv/hal/kernel/arch/gc_hal_kernel_hardware.c#L2747-L2761

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index c61d50dd3829..c669419b3ae3 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -643,6 +643,12 @@  static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu)
 		pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_SE |
 		       VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA;
 
+	/* Disable SH_EU clock gating on affected core revisions. */
+	if (etnaviv_is_model_rev(gpu, 0x8000, 0x7200) ||
+	    etnaviv_is_model_rev(gpu, 0x8000, 0x8002) ||
+	    etnaviv_is_model_rev(gpu, 0x9200, 0x6304))
+		pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_SH_EU;
+
 	pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_HZ;
 	pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ;