linux-kernel - [PATCH 1/2] habanalabs: set new golden value to tpc clock relaxation

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Date:   Thu, 21 Mar 2019 16:43:34 +0200
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, Dalit Ben Zoor <dbenzoor@...ana.ai>
Subject: [PATCH 1/2] habanalabs: set new golden value to tpc clock relaxation

From: Dalit Ben Zoor <dbenzoor@...ana.ai>

On init or context switch, set TPC clock relaxation counter
register to a golden value.

Signed-off-by: Dalit Ben Zoor <dbenzoor@...ana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/goya/goya.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index a4bb963e33fa..b14380834322 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -1437,6 +1437,7 @@ static void goya_init_golden_registers(struct hl_device *hdev)
 	 */
 	WREG32(mmDMA_CH_0_CFG0, 0x0fff0010);
 	WREG32(mmDMA_CH_1_CFG0, 0x0fff00F0);
+	WREG32(mmTPC_PLL_CLK_RLX_0, 0x200020);
 
 	goya->hw_cap_initialized |= HW_CAP_GOLDEN;
 }
@@ -4459,6 +4460,7 @@ static int goya_context_switch(struct hl_device *hdev, u32 asid)
 		return rc;
 	}
 
+	WREG32(mmTPC_PLL_CLK_RLX_0, 0x200020);
 	goya_mmu_prepare(hdev, asid);
 
 	return 0;
-- 
2.17.1