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

Groups > linux.kernel > #1424347

Re: [PATCH v2 08/11] Documentation: phy: Let the rockchip eMMC PHY get an exported card clock

Show all headers | View raw

On Mon, Jun 13, 2016 at 04:04:32PM -0700, Douglas Anderson wrote:
> As of an earlier change in this series ("Documentation: mmc:
> sdhci-of-arasan: Add ability to export card clock") the SDHCI driver
> used on Rockchip SoCs can now expose its clock.  Let's now specify that
> the PHY can use it.
> 
> Letting the PHY get access to this clock means it can adjust
> phyctrl_frqsel field appropriately.  Although the Rockchip PHY appears
> slightly different than the reference Arasan one, you can see that the
> Arasan datasheet [1] had it defined as:
>   Select the frequency range of DLL operation:
>   3b'000 => 200MHz to 170 MHz
>   3b'001 => 170MHz to 140 MHz
>   3b'010 => 140MHz to 110 MHz
>   3b'011 => 110MHz to 80MHz
>   3b'100 => 80MHz to 50 MHz
>   3b'101 => 275Mhz to 250MHz
>   3b'110 => 250MHz to 225MHz
>   3b'111 => 225MHz to 200MHz
> 
> On the Rockchip version of the PHY we have less granularity but the idea
> is the same.
> 
> [1]: https://arasan.com/wp-content/media/eMMC-5-1-Total-Solution_Rev-1-3.pdf
> 
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
> Changes in v2:
> - List out clocks and clock names (Rob)
> 
>  Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt | 9 +++++++++
>  1 file changed, 9 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>

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

Thread

[PATCH v2 0/11] Changes to support 150 MHz eMMC on rk3399 Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
  [PATCH v2 11/11] arm64: dts: rockchip: Provide emmcclk to PHY for rk3399 Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 11/11] arm64: dts: rockchip: Provide emmcclk to PHY for rk3399 Heiko Stübner <heiko@sntech.de> - 2016-06-18 14:10 +0200
  [PATCH v2 04/11] mmc: sdhci-of-arasan: Properly set corecfg_baseclkfreq on rk3399 Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 04/11] mmc: sdhci-of-arasan: Properly set corecfg_baseclkfreq on rk3399 Heiko Stuebner <heiko@sntech.de> - 2016-06-18 20:10 +0200
  [PATCH v2 07/11] mmc: sdhci-of-arasan: Add ability to export card clock Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 07/11] mmc: sdhci-of-arasan: Add ability to export card clock Doug Anderson <dianders@chromium.org> - 2016-06-15 18:50 +0200
  [PATCH v2 08/11] Documentation: phy: Let the rockchip eMMC PHY get an exported card clock Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 08/11] Documentation: phy: Let the rockchip eMMC PHY  get an exported card clock Rob Herring <robh@kernel.org> - 2016-06-16 20:50 +0200
    Re: [PATCH v2 08/11] Documentation: phy: Let the rockchip eMMC PHY get an exported card clock Heiko Stübner <heiko@sntech.de> - 2016-06-18 23:50 +0200
    Re: [PATCH v2 08/11] Documentation: phy: Let the rockchip eMMC PHY  get an exported card clock Kishon Vijay Abraham I <kishon@ti.com> - 2016-06-20 15:10 +0200
  [PATCH v2 09/11] phy: rockchip-emmc: Minor code cleanup in rockchip_emmc_phy_power_on/off() Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 09/11] phy: rockchip-emmc: Minor code cleanup in  rockchip_emmc_phy_power_on/off() Shawn Lin <shawn.lin@rock-chips.com> - 2016-06-14 02:40 +0200
  [PATCH v2 06/11] Documentation: mmc: sdhci-of-arasan: Add ability to export card clock Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:10 +0200
    Re: [PATCH v2 06/11] Documentation: mmc: sdhci-of-arasan: Add ability to export card clock Heiko Stuebner <heiko@sntech.de> - 2016-06-18 20:10 +0200
  [PATCH v2 01/11] phy: rockchip-emmc: Increase lock time allowance Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:20 +0200
    Re: [PATCH v2 01/11] phy: rockchip-emmc: Increase lock time allowance Shawn Lin <shawn.lin@rock-chips.com> - 2016-06-14 02:30 +0200
  [PATCH v2 03/11] Documentation: mmc: sdhci-of-arasan: Add soc-ctl-syscon for corecfg regs Douglas Anderson <dianders@chromium.org> - 2016-06-14 01:20 +0200
    Re: [PATCH v2 03/11] Documentation: mmc: sdhci-of-arasan: Add  soc-ctl-syscon for corecfg regs Shawn Lin <shawn.lin@rock-chips.com> - 2016-06-14 02:40 +0200
    Re: [PATCH v2 03/11] Documentation: mmc: sdhci-of-arasan: Add soc-ctl-syscon for corecfg regs Heiko Stübner <heiko@sntech.de> - 2016-06-18 16:20 +0200
  Re: [PATCH v2 0/11] Changes to support 150 MHz eMMC on rk3399 Heiko Stuebner <heiko@sntech.de> - 2016-06-17 01:50 +0200
  Re: [PATCH v2 0/11] Changes to support 150 MHz eMMC on rk3399 Kishon Vijay Abraham I <kishon@ti.com> - 2016-06-17 14:50 +0200
    Re: [PATCH v2 0/11] Changes to support 150 MHz eMMC on rk3399 Doug Anderson <dianders@chromium.org> - 2016-06-17 17:40 +0200

csiph-web