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memory: tegra: Set BPMP msg flags to reset IPC channels

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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: f41e1442ac ("cpufreq: tegra194: add OPP support and set bandwidth")
Co-developed-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2023-10-09 15:35:57 +05:30
parent 364b40c6dd
commit f344675a34
1 changed files with 4 additions and 0 deletions
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4
drivers/memory/tegra/tegra234.c
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@ -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);