Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-12 Thread Shawn Guo
On Tue, Sep 10, 2019 at 02:47:59AM +, Anson Huang wrote: > > > > On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd wrote: > > > > > > Quoting Peng Fan (2019-08-27 01:17:50) > > > > From: Peng Fan > > > > > > > > There is hardware issue that: > > > > The output clock the LPCG cell will not turn

Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-10 Thread Daniel Baluta
On Tue, Sep 10, 2019 at 1:40 PM Anson Huang wrote: > > > > > On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd wrote: > > > > > > Quoting Peng Fan (2019-08-27 01:17:50) > > > > From: Peng Fan > > > > > > > > There is hardware issue that: > > > > The output clock the LPCG cell will not turn back on as

RE: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-09 Thread Anson Huang
> On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd wrote: > > > > Quoting Peng Fan (2019-08-27 01:17:50) > > > From: Peng Fan > > > > > > There is hardware issue that: > > > The output clock the LPCG cell will not turn back on as expected, > > > even though a read of the IPG registers in the LPCG

Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-09 Thread Dong Aisheng
On Sat, Sep 7, 2019 at 9:47 PM Stephen Boyd wrote: > > Quoting Peng Fan (2019-08-27 01:17:50) > > From: Peng Fan > > > > There is hardware issue that: > > The output clock the LPCG cell will not turn back on as expected, > > even though a read of the IPG registers in the LPCG indicates that > >

Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-09 Thread Dong Aisheng
On Tue, Aug 27, 2019 at 4:19 PM Peng Fan wrote: > > From: Peng Fan > > There is hardware issue that: > The output clock the LPCG cell will not turn back on as expected, > even though a read of the IPG registers in the LPCG indicates that > the clock should be enabled. > > The software workaround

Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-09-06 Thread Stephen Boyd
Quoting Peng Fan (2019-08-27 01:17:50) > From: Peng Fan > > There is hardware issue that: > The output clock the LPCG cell will not turn back on as expected, > even though a read of the IPG registers in the LPCG indicates that > the clock should be enabled. > > The software workaround is to

[PATCH] clk: imx: lpcg: write twice when writing lpcg regs

2019-08-27 Thread Peng Fan
From: Peng Fan There is hardware issue that: The output clock the LPCG cell will not turn back on as expected, even though a read of the IPG registers in the LPCG indicates that the clock should be enabled. The software workaround is to write twice to enable the LPCG clock output.