Re: [PATCH v9 5/8] soc/tegra: pmc: Implement get_performance_state() callback
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-08-27 04:08:25
Also in:
linux-pm, lkml
27.08.2021 07:02, Viresh Kumar пишет:
On 27-08-21, 06:47, Dmitry Osipenko wrote:quoted
Actually, it doesn't work. The devm_tegra_core_dev_init_opp_table() needs to set clk to support older device-tree and now OPP table already has clk being set. WARNING: CPU: 2 PID: 92 at drivers/opp/core.c:2146 dev_pm_opp_set_clkname+0x97/0xb8 Modules linked in: CPU: 2 PID: 92 Comm: kworker/u8:1 Tainted: G W 5.14.0-rc7-next-20210826-00181-g6389463cbb0a #9318 Hardware name: NVIDIA Tegra SoC (Flattened Device Tree) Workqueue: events_unbound deferred_probe_work_func [<c010cc91>] (unwind_backtrace) from [<c0108d35>] (show_stack+0x11/0x14) [<c0108d35>] (show_stack) from [<c0a6c1bd>] (dump_stack_lvl+0x2b/0x34) [<c0a6c1bd>] (dump_stack_lvl) from [<c011fc47>] (__warn+0xbb/0x100) [<c011fc47>] (__warn) from [<c0a696e3>] (warn_slowpath_fmt+0x4b/0x80) [<c0a696e3>] (warn_slowpath_fmt) from [<c07407b3>] (dev_pm_opp_set_clkname+0x97/0xb8) [<c07407b3>] (dev_pm_opp_set_clkname) from [<c07407e3>] (devm_pm_opp_set_clkname+0xf/0x64) [<c07407e3>] (devm_pm_opp_set_clkname) from [<c050735b>] (devm_tegra_core_dev_init_opp_table+0x23/0x144)Why are you calling this anymore ?
Older device-trees don't have OPPs, meanwhile drivers will use dev_pm_opp_set_rate() and it requires OPP table to be set up using devm_pm_opp_set_clkname(). The devm_tegra_core_dev_init_opp_table() is a common helper that sets up OPP table for Tegra drivers and it sets the clk.