Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1528843

Re: [PATCH] ARM: dts: imx7d: fix LCDIF clock assignment

Show all headers | View raw

On Tue, Nov 22, 2016 at 10:42 PM, Stefan Agner <stefan@agner.ch> wrote:
> The eLCDIF IP of the i.MX 7 SoC knows multiple clocks and lists them
> separately:
>
> Clock      Clock Root              Description
> apb_clk    MAIN_AXI_CLK_ROOT       AXI clock
> pix_clk    LCDIF_PIXEL_CLK_ROOT    Pixel clock
> ipg_clk_s  MAIN_AXI_CLK_ROOT       Peripheral access clock
>
> All of them are switched by a single gate, which is part of the
> IMX7D_LCDIF_PIXEL_ROOT_CLK clock. Hence using that clock also for
> the AXI bus clock (clock-name "axi") makes sure the gate gets
> enabled when accessing registers.
>
> There seem to be no separate AXI display clock, and the clock is
> optional. Hence remove the dummy clock.
>
> This fixes kernel freezes when starting the X-Server (which
> disables/re-enables the display controller).
>
> Signed-off-by: Stefan Agner <stefan@agner.ch>

Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] ARM: dts: imx7d: fix LCDIF clock assignment Stefan Agner <stefan@agner.ch> - 2016-11-23 01:50 +0100
  Re: [PATCH] ARM: dts: imx7d: fix LCDIF clock assignment Fabio Estevam <festevam@gmail.com> - 2016-11-24 00:10 +0100

csiph-web