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ASoC: tegra: Update PLL rate for Tegra264

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The PLLs should be set with a VCO frequency in the 900MHz – 1GHz range
to minimize jitter and ppm error for Tegra264. Add the PLLA rate
accordingly.

Therefore, use 983040000 frequency is for multiple of 8K frequencies
and 993484800 frequency is for multiple of 11.025K frequencies.

Signed-off-by: Sheetal <sheetal@nvidia.com>
Link: https://patch.msgid.link/20250512051747.1026770-7-sheetal@nvidia.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sheetal
2025-05-12 05:17:42 +00:00
committed by Mark Brown
parent fa83757df3
commit 1fb500476f
1 changed files with 12 additions and 2 deletions
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14
sound/soc/tegra/tegra_audio_graph_card.c
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@@ -1,8 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2020-2025 NVIDIA CORPORATION. All rights reserved.
//
// tegra_audio_graph_card.c - Audio Graph based Tegra Machine Driver
//
// Copyright (c) 2020-2021 NVIDIA CORPORATION. All rights reserved.
#include <linux/math64.h>
#include <linux/module.h>
@@ -232,11 +231,22 @@ static const struct tegra_audio_cdata tegra186_data = {
.plla_out0_rates[x11_RATE] = 45158400,
};
static const struct tegra_audio_cdata tegra264_data = {
/* PLLA1 */
.plla_rates[x8_RATE] = 983040000,
.plla_rates[x11_RATE] = 993484800,
/* PLLA1_OUT1 */
.plla_out0_rates[x8_RATE] = 49152000,
.plla_out0_rates[x11_RATE] = 45158400,
};
static const struct of_device_id graph_of_tegra_match[] = {
{ .compatible = "nvidia,tegra210-audio-graph-card",
.data = &tegra210_data },
{ .compatible = "nvidia,tegra186-audio-graph-card",
.data = &tegra186_data },
{ .compatible = "nvidia,tegra264-audio-graph-card",
.data = &tegra264_data },
{},
};
MODULE_DEVICE_TABLE(of, graph_of_tegra_match);