Commit 931f38f0 authored Dec 17, 2015 by Nadine Toledano Committed by Gerrit - the friendly Code Review server Dec 17, 2015

msm: ipa3: disable prefetch in ipa mhi driver



The prefetch mechanism is not supported yet due to a known limitation
in GSI firmware. This change configures the MHI HW accelerated channels
to work in direct mode rather than doorbell mode.

Change-Id: I8cfc7c941c9c86b810c23935ab8bb8fdc07a41a7
Signed-off-by: Nadine Toledano <nadinet@codeaurora.org>

parent d70d0441

drivers/platform/msm/ipa/ipa_v3/ipa_mhi.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1606,7 +1606,7 @@ static int ipa_mhi_start_gsi_channel(struct ipa3_mhi_channel_ctx *channel,
		ch_props.ring_len = channel->ch_ctx_host.rlen;
		ch_props.ring_base_addr = IPA_MHI_HOST_ADDR_COND(
		channel->ch_ctx_host.rbase);
		ch_props.use_db_eng = GSI_CHAN_DB_MODE;
		ch_props.use_db_eng = GSI_CHAN_DIRECT_MODE;
		ch_props.max_prefetch = GSI_ONE_PREFETCH_SEG;
		ch_props.low_weight = 1;
		ch_props.err_cb = ipa_mhi_gsi_ch_err_cb;