48 lines
1.8 KiB
Diff
48 lines
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: "R, Dharageswari" <dharageswari.r@intel.com>
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Date: Mon, 25 Dec 2017 04:48:41 +0530
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Subject: [PATCH] ASoC: Intel: CNL: Fix for the firmware redownload failure on
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ICL
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There is a bug in hda uncaching mechanism due to which seecond time
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firmware download was failing in the ICL platform. In order to get
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around this, flush_cache_range() is used as WA to maintain the
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integrity of firmware. This patch will be reverted, once the proper
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fix is available
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Change-Id: I2efdfe82dc302e8a1b623c905da2ea08084d8074
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Signed-off-by: R, Dharageswari <dharageswari.r@intel.com>
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Signed-off-by: Pradeep Tewani <pradeep.d.tewani@intel.com>
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Reviewed-on:
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Reviewed-by: Kale, Sanyog R <sanyog.r.kale@intel.com>
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Reviewed-by: Prakash, Divya1
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Reviewed-by: Prusty, Subhransu S <subhransu.s.prusty@intel.com>
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Tested-by: Madiwalar, MadiwalappaX <madiwalappax.madiwalar@intel.com>
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---
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sound/soc/intel/skylake/cnl-sst.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/sound/soc/intel/skylake/cnl-sst.c b/sound/soc/intel/skylake/cnl-sst.c
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index 4aa65f4e313d..bfc4da85c043 100644
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--- a/sound/soc/intel/skylake/cnl-sst.c
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+++ b/sound/soc/intel/skylake/cnl-sst.c
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@@ -30,6 +30,7 @@
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#include <linux/sdw_bus.h>
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#include <linux/sdw/sdw_cnl.h>
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#include <asm/set_memory.h>
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+#include <asm/cacheflush.h>
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#include "../common/sst-dsp.h"
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#include "../common/sst-dsp-priv.h"
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@@ -137,6 +138,7 @@ static int cnl_prepare_fw(struct sst_dsp *ctx, const void *fwdata, u32 fwsize)
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ctx->dsp_ops.stream_tag = stream_tag;
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memcpy(ctx->dmab.area, fwdata, fwsize);
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+ clflush_cache_range(ctx->dmab.area, fwsize);
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/* purge FW request */
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sst_dsp_shim_write(ctx, CNL_ADSP_REG_HIPCIDR,
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CNL_ADSP_REG_HIPCIDR_BUSY | (CNL_IPC_PURGE |
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--
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https://clearlinux.org
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