[v12,18/21] riscv: Enable cpu clock if it is present

The cpu clock is probably already enabled if we are executing code (though
we could be executing from a different core). This patch prevents the cpu
clock or its parents from being disabled.

Signed-off-by: Sean Anderson <seanga2 at gmail.com>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---
This patch was previously submitted on its own as
https://patchwork.ozlabs.org/patch/1232420/

Changes in v4:
- New

 drivers/cpu/riscv_cpu.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

Message ID	20200520191738.337845-19-seanga2@gmail.com
State	Superseded
Headers	show List-Id: U-Boot discussion <u-boot.lists.denx.de> From: seanga2 at gmail.com (Sean Anderson) Date: Wed, 20 May 2020 15:17:35 -0400 Subject: [PATCH v12 18/21] riscv: Enable cpu clock if it is present In-Reply-To: <20200520191738.337845-1-seanga2@gmail.com> References: <20200520191738.337845-1-seanga2@gmail.com> Message-ID: <20200520191738.337845-19-seanga2@gmail.com>
Series	riscv: Add Sipeed Maix support \| expand [v12,00/21] riscv: Add Sipeed Maix support [v12,01/21] clk: Always use the supplied struct clk [v12,02/21] clk: Check that ops of composite clock components exist before calling [v12,03/21] clk: Unconditionally recursively en-/dis-able clocks [v12,04/21] clk: Fix clk_get_by_* handling of index [v12,05/21] clk: Add K210 pll support [v12,06/21] clk: Add a bypass clock for K210 [v12,07/21] clk: Add K210 clock support [v12,08/21] dm: Add support for simple-pm-bus [v12,09/21] dm: Fix error handling for dev_read_addr_ptr [v12,10/21] reset: Add generic reset driver [v12,11/21] lib: Always set errno in hcreate_r [v12,12/21] riscv: Add headers for asm/global_data.h [v12,13/21] riscv: Clear pending interrupts before enabling IPIs [v12,14/21] riscv: Clean up IPI initialization code [v12,15/21] riscv: Add option to support RISC-V privileged spec 1.9 [v12,16/21] riscv: Allow use of reset drivers [v12,17/21] riscv: Try to get cpu frequency from a "clocks" node if it exists [v12,18/21] riscv: Enable cpu clock if it is present [v12,19/21] riscv: Add device tree for K210 and Sipeed Maix BitM [v12,20/21] doc: riscv: Add documentation for Sipeed Maix Bit [v12,21/21] riscv: Add Sipeed Maix support

[v12,18/21] riscv: Enable cpu clock if it is present

Commit Message

Patch