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path: root/drivers/clk/tegra/clk-super.c
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* clk: tegra: clk-super: Add restore-context supportSowjanya Komatineni2019-11-111-0/+27
| | | | | | | | | | | | | | This patch implements restore_context for clk_super_mux and clk_super. During system supend, core power goes off the and context of Tegra CAR registers is lost. So on system resume, context of super clock registers are restored to have them in same state as before suspend. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
* clk: tegra: clk-super: Fix to enable PLLP branches to CPUSowjanya Komatineni2019-11-111-0/+14
| | | | | | | | | | | | | | | | | | This patch has a fix to enable PLLP branches to CPU before changing the CPU cluster clock source to PLLP for Gen5 Super clock and disables PLLP branches to CPU when not in use. During system suspend entry and exit, CPU source will be switched to PLLP and this needs PLLP branches to be enabled to CPU prior to the switch. On system resume, warmboot code enables PLLP branches to CPU and powers up the CPU with PLLP clock source. Acked-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201Thomas Gleixner2019-05-301-12/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 228 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* clk: tegra: Make tegra_clk_super_mux_ops staticYueHaibing2019-04-111-1/+1
| | | | | | | | | | | Fix sparse warning: drivers/clk/tegra/clk-super.c:124:22: warning: symbol 'tegra_clk_super_mux_ops' was not declared. Should it be static? Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk: tegra: Add super clock mux/dividerPeter De Schrijver2017-03-201-4/+83
| | | | | | | | | | Add a super clock type which implements both mux and divider. This is used for aclk. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> Tested-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
* clk: tegra: Properly include clk.hStephen Boyd2015-07-201-1/+0
| | | | | | | | | | | Clock provider drivers generally shouldn't include clk.h because it's the consumer API. Only include clk.h in files that are using it. Also add in a clkdev.h include that was missing in a file using clkdev APIs. Cc: Peter De Schrijver <pdeschrijver@nvidia.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: tegra: Implement locking for super clockPeter De Schrijver2013-02-121-3/+15
| | | | | | | | | | Although tegra_clk_register_super_mux() has a lock parameter, the lock is not actually used by the code. Fixed with this patch. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Reviewed-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
* clk: tegra: add Tegra specific clocksPrashant Gaikwad2013-01-281-0/+154
Add Tegra specific clocks, pll, pll_out, peripheral, frac_divider, super. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> [swarren: alloc sizeof(*foo) not sizeof(struct foo), add comments re: storing pointers to stack variables, make a timeout loop more idiomatic, use _clk_pll_disable() not clk_disable_pll() from _program_pll() to avoid redundant lock operations, unified tegra_clk_periph() and tegra_clk_periph_nodiv(), unified tegra_clk_pll{,e}, rename all clock registration functions so they don't have the same name as the clock structs, return -EINVAL from clk_plle_enable when matching table rate not found, pass ops to _tegra_clk_register_pll rather than a bool.] Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
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