diff options
| author | Timo Alho <talho@nvidia.com> | 2019-01-24 19:03:54 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2019-01-25 15:58:47 +0100 |
| commit | 139251fc220830cc49b71331d281a8ad03a08ab7 (patch) | |
| tree | 78c77de78f1da98ba29834e45cf81f0eeffaf1a9 /drivers/firmware/tegra/bpmp.c | |
| parent | cdfa358b248efd36c6a9cb4d4d0a3ba7509f8387 (diff) | |
| download | linux-139251fc220830cc49b71331d281a8ad03a08ab7.tar.bz2 | |
firmware: tegra: add bpmp driver for Tegra210
This patch adds driver for Tegra210 BPMP firmware.
The BPMP is a specific processor in Tegra210 chip, which runs firmware
for assisting in entering deep low power states (suspend to ram), and
offloading DRAM memory clock scaling on some platforms.
Based on work by Sivaram Nair <sivaramn@nvidia.com>
Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/firmware/tegra/bpmp.c')
| -rw-r--r-- | drivers/firmware/tegra/bpmp.c | 46 |
1 files changed, 37 insertions, 9 deletions
diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index 2b498deacdbc..8e3f79959d48 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -768,17 +768,23 @@ static int tegra_bpmp_probe(struct platform_device *pdev) if (err < 0) goto free_mrq; - err = tegra_bpmp_init_clocks(bpmp); - if (err < 0) - goto free_mrq; + if (of_find_property(pdev->dev.of_node, "#clock-cells", NULL)) { + err = tegra_bpmp_init_clocks(bpmp); + if (err < 0) + goto free_mrq; + } - err = tegra_bpmp_init_resets(bpmp); - if (err < 0) - goto free_mrq; + if (of_find_property(pdev->dev.of_node, "#reset-cells", NULL)) { + err = tegra_bpmp_init_resets(bpmp); + if (err < 0) + goto free_mrq; + } - err = tegra_bpmp_init_powergates(bpmp); - if (err < 0) - goto free_mrq; + if (of_find_property(pdev->dev.of_node, "#power-domain-cells", NULL)) { + err = tegra_bpmp_init_powergates(bpmp); + if (err < 0) + goto free_mrq; + } err = tegra_bpmp_init_debugfs(bpmp); if (err < 0) @@ -827,8 +833,30 @@ static const struct tegra_bpmp_soc tegra186_soc = { .num_resets = 193, }; +static const struct tegra_bpmp_soc tegra210_soc = { + .channels = { + .cpu_tx = { + .offset = 0, + .count = 1, + .timeout = 60 * USEC_PER_SEC, + }, + .thread = { + .offset = 4, + .count = 1, + .timeout = 600 * USEC_PER_SEC, + }, + .cpu_rx = { + .offset = 8, + .count = 1, + .timeout = 0, + }, + }, + .ops = &tegra210_bpmp_ops, +}; + static const struct of_device_id tegra_bpmp_match[] = { { .compatible = "nvidia,tegra186-bpmp", .data = &tegra186_soc }, + { .compatible = "nvidia,tegra210-bpmp", .data = &tegra210_soc }, { } }; |