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linux/drivers/clk/tegra
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Dmitry Osipenko d1eaf4cb44 clk: tegra: Ensure that PLLU configuration is applied properly 
[ Upstream commit a7196048cd ]

The PLLU (USB) consists of the PLL configuration itself and configuration
of the PLLU outputs. The PLLU programming is inconsistent on T30 vs T114,
where T114 immediately bails out if PLLU is enabled and T30 re-enables
a potentially already enabled PLL (left after bootloader) and then fully
reprograms it, which could be unsafe to do. The correct way should be to
skip enabling of the PLL if it's already enabled and then apply
configuration to the outputs. This patch doesn't fix any known problems,
it's a minor improvement.

Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2021-07-19 09:44:43 +02:00
..
clk-audio-sync.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
clk-bpmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
clk-dfll.c clk: tegra: Do not return 0 on failure 2020-12-30 11:54:26 +01:00
clk-dfll.h clk: tegra: clk-dfll: Add suspend and resume support 2019-11-11 14:53:03 +01:00
clk-divider.c clk: tegra: divider: Check UART's divider enable-bit state on rate's recalculation 2020-01-10 15:50:05 +01:00
clk-id.h clk: tegra: Fix duplicated SE clock entry 2020-12-30 11:53:49 +01:00
clk-periph-fixed.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
clk-periph-gate.c clk: tegra: Fix refcounting of gate clocks 2021-07-19 09:44:43 +02:00
clk-periph.c clk: tegra: Fix refcounting of gate clocks 2021-07-19 09:44:43 +02:00
clk-pll-out.c clk: tegra: pllout: Save and restore pllout context 2019-11-11 14:53:02 +01:00
clk-pll.c clk: tegra: Ensure that PLLU configuration is applied properly 2021-07-19 09:44:43 +02:00
clk-sdmmc-mux.c clk: tegra: periph: Add restore_context support 2019-11-11 14:53:02 +01:00
clk-super.c clk: tegra: clk-super: Add restore-context support 2019-11-11 14:53:03 +01:00
clk-tegra-audio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
clk-tegra-fixed.c clk: tegra: Remove CLK_M_DIV fixed clocks 2020-03-12 11:33:32 +01:00
clk-tegra-periph.c clk: tegra: Fix duplicated SE clock entry 2020-12-30 11:53:49 +01:00
clk-tegra-super-cclk.c clk: tegra: cclk: Add helpers for handling PLLX rate changes 2020-05-12 22:48:43 +02:00
clk-tegra-super-gen4.c clk: tegra: clk-super: Fix to enable PLLP branches to CPU 2019-11-11 14:53:03 +01:00
clk-tegra20-emc.c clk: tegra: Add Tegra20/30 EMC clock implementation 2019-11-11 14:01:22 +01:00
clk-tegra20.c clk: tegra20: Use custom CCLK implementation 2020-05-12 22:48:43 +02:00
clk-tegra30.c clk: tegra30: Use 300MHz for video decoder by default 2021-07-14 16:56:19 +02:00
clk-tegra114.c clk: tegra: Remove audio clocks configuration from clock driver 2020-03-12 12:10:49 +01:00
clk-tegra124-dfll-fcpu.c clk: tegra: clk-dfll: Add suspend and resume support 2019-11-11 14:53:03 +01:00
clk-tegra124-emc.c clk: tegra: Rename Tegra124 EMC clock source file 2020-05-12 22:48:41 +02:00
clk-tegra124.c clk: tegra: Fix initial rate for pll_a on Tegra124 2020-05-12 16:26:18 -07:00
clk-tegra210-emc.c This pull request contains zero diff to the core framework. It is a collection 2020-10-22 12:53:28 -07:00
clk-tegra210.c clk: tegra: Add Tegra210 CSI TPG clock gate 2020-05-12 22:48:43 +02:00
clk-utils.c clk: tegra: Refactor fractional divider calculation 2018-07-25 13:43:34 -07:00
clk.c clk: tegra: Fix double-free in tegra_clk_init() 2019-12-24 00:01:06 -08:00
clk.h clk: tegra: cclk: Add helpers for handling PLLX rate changes 2020-05-12 22:48:43 +02:00
cvb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
cvb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
Kconfig clk: tegra: Rename Tegra124 EMC clock source file 2020-05-12 22:48:41 +02:00
Makefile clk: tegra: Add custom CCLK implementation 2020-05-12 22:48:42 +02:00