From: Thierry Reding Date: Mon, 9 Oct 2023 10:05:57 +0000 (+0530) Subject: memory: tegra: Set BPMP msg flags to reset IPC channels X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f344675a34383ae26a8230f4b1cd99cbd0defebd;p=linux.git memory: tegra: Set BPMP msg flags to reset IPC channels Set the 'TEGRA_BPMP_MESSAGE_RESET' bit in newly added 'flags' field of 'struct tegra_bpmp_message' to request for the reset of BPMP IPC channels. This is used along with the 'suspended' check in BPMP driver for handling early bandwidth requests due to the hotplug of CPU's during system resume before the driver gets resumed. Fixes: f41e1442ac5b ("cpufreq: tegra194: add OPP support and set bandwidth") Co-developed-by: Sumit Gupta Signed-off-by: Sumit Gupta Acked-by: Krzysztof Kozlowski Signed-off-by: Thierry Reding --- diff --git a/drivers/memory/tegra/tegra234.c b/drivers/memory/tegra/tegra234.c index 9e5b5dbd9c8df..2845041f32d69 100644 --- a/drivers/memory/tegra/tegra234.c +++ b/drivers/memory/tegra/tegra234.c @@ -986,6 +986,10 @@ static int tegra234_mc_icc_set(struct icc_node *src, struct icc_node *dst) msg.rx.data = &bwmgr_resp; msg.rx.size = sizeof(bwmgr_resp); + if (pclient->bpmp_id >= TEGRA_ICC_BPMP_CPU_CLUSTER0 && + pclient->bpmp_id <= TEGRA_ICC_BPMP_CPU_CLUSTER2) + msg.flags = TEGRA_BPMP_MESSAGE_RESET; + ret = tegra_bpmp_transfer(mc->bpmp, &msg); if (ret < 0) { dev_err(mc->dev, "BPMP transfer failed: %d\n", ret);