tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
firmware: tegra: Enable BPMP support on Tegra234
Enable support for the BPMP on Tegra234 to avoid relying on Tegra194
being enabled to pull in the needed OF device ID table entry.
On simulation platforms the BPMP hasn't booted up yet by the time we
probe the BPMP driver and the BPMP hasn't had a chance to mark the
doorbell as ringable by the CCPLEX. This corresponding check in the
BPMP driver will therefore fail. Work around this by disabling the
check on simulation platforms.
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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drivers/firmware/tegra/bpmp.c
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drivers/firmware/tegra/bpmp.c
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static const struct of_device_id tegra_bpmp_match[] = {
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#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC) || \
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-
IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
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IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC) || \
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IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC)
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{ .compatible = "nvidia,tegra186-bpmp", .data = &tegra186_soc },
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#endif
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#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
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drivers/mailbox/tegra-hsp.c
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drivers/mailbox/tegra-hsp.c
···
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#include <linux/pm.h>
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#include <linux/slab.h>
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#include <soc/tegra/fuse.h>
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#include <dt-bindings/mailbox/tegra186-hsp.h>
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#include "mailbox.h"
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if (!ccplex)
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return -ENODEV;
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-
if (!tegra_hsp_doorbell_can_ring(db))
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/*
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* On simulation platforms the BPMP hasn't had a chance yet to mark
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* the doorbell as ringable by the CCPLEX, so we want to skip extra
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* checks here.
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*/
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if (tegra_is_silicon() && !tegra_hsp_doorbell_can_ring(db))
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return -ENODEV;
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spin_lock_irqsave(&hsp->lock, flags);