Re: Clocks used by another OS/CPU (was: Re: [RFC PATCH] clk: renesas: cpg-mssr: Add interface for critical core clocks)

On 01.07.2017 20:14, Uwe Kleine-König wrote: Hello, On Sat, Jul 01, 2017 at 07:02:48AM +0200, Dirk Behme wrote: On 30.06.2017 22:24, Uwe Kleine-König wrote: Hello, On Fri, Jun 30, 2017 at 10:58:26AM -0500, Rob Herring wrote: TL;DR: Clocks may be in use by another CPU not running Linux,

[PATCH 6/8] clk: vc5: Add support for the input frequency doubler

The VersaClock 6 has an input frequency doubler between the input clock mux and the predivider. Add new capability flag and support for this frequency doubler block into the driver. Signed-off-by: Marek Vasut Cc: Stephen Boyd Cc: Alexey

[PATCH 1/8] clk: vc5: Prevent division by zero on unconfigured outputs

In case the initial values of the FOD registers are not configured in the OTP or by the bootloader, it is possible that the FOD registers will contain zeroes. The code in vc5_fod_recalc_rate() immediately feeds the FOD divider value obtained from the FOD registers into the div64_u64() and if the

[PATCH V2 7/8] clk: vc5: Add bindings for IDT VersaClock 5P49V6901

IDT VersaClock 6 5P49V6901 has 4 clock outputs, 4 fractional dividers. Input clock source can be taken from either external crystal or from external reference clock. Signed-off-by: Marek Vasut Cc: Alexey Firago Cc: Rob Herring

[PATCH V2 8/8] clk: vc5: Add support for IDT VersaClock 5P49V6901

Update IDT VersaClock 5 driver to support IDT VersaClock 6 5P49V6901. This chip has two clock inputs (external XTAL or external CLKIN), four fractional dividers (FODs) and five clock outputs (four universal clock outputs and one reference clock output at OUT0_SELB_I2C). Signed-off-by: Marek Vasut

[PATCH V2 3/8] clk: vc5: Do not warn about disabled output buffer input muxes

The output buffer input mux can be configured in either of three states -- disabled, input from FOD, input from previous output. If the output buffer input mux is set to disabled, the code in vc5_clk_out_get_parent() would consider this an invalid setting and warn about it, which is not

[PATCH 4/8] clk: vc5: Configure the output buffer input mux on prepare

The output buffer input mux can be configured in either of three states -- disabled, input from FOD, input from previous output. Once the .prepare() callback of the output buffer is called, the output buffer input mux must be set to either input from FOD or input from previous output, it cannot be

[PATCH 2/8] clk: vc5: Fix trivial typo

Fix trivial typo in vc5_clk_out_unprepare() , s/Enable/Disable/ . Signed-off-by: Marek Vasut Cc: Stephen Boyd Cc: Alexey Firago Cc: Michael Turquette Cc: Laurent Pinchart

Re: [PATCH 3/8] clk: vc5: Do not warn about disabled output buffer input muxes

On 06/30/2017 09:26 PM, Stephen Boyd wrote: > On 06/29, Marek Vasut wrote: >> @@ -549,6 +552,7 @@ static unsigned char vc5_clk_out_get_parent(struct >> clk_hw *hw) >> >> dev_warn(>client->dev, >> "Invalid clock output configuration (%02x)\n", src); >> + >> return 0; >>

[PATCH 5/8] clk: vc5: Split clock input mux and predivider

Split the VC5 clock input mux and the predivider to more accurately model the hardware and fix the previously incorrect assumption that both the OUT_SEL_I2CB and the PLL are fed from the predivider. It is in fact the clock input mux output which is directly feeding the clock into the OUT_SEL_I2CB

Re: Clocks used by another OS/CPU (was: Re: [RFC PATCH] clk: renesas: cpg-mssr: Add interface for critical core clocks)

Hello, On Sat, Jul 01, 2017 at 07:02:48AM +0200, Dirk Behme wrote: > On 30.06.2017 22:24, Uwe Kleine-König wrote: > > Hello, > > > > On Fri, Jun 30, 2017 at 10:58:26AM -0500, Rob Herring wrote: > > > > TL;DR: Clocks may be in use by another CPU not running Linux, while > > > > Linux > > > >