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

Groups > linux.kernel > #1425811

Re: [PATCH v2 06/11] Documentation: mmc: sdhci-of-arasan: Add ability to export card clock

Show all headers | View raw

Am Montag, 13. Juni 2016, 16:04:30 schrieb Douglas Anderson:
> Some SD/eMMC PHYs (like the PHY from Arasan that is designed to work
> with arasan,sdhci-5.1) need to know the card clock frequency in order to
> function properly.  Physically in a SoC this clock is exported from the
> SDHCI IP block to the PHY IP block and the PHY needs to know the speed.
> Let's export the SDHCI card clock using a standard device tree mechanism
> so that the PHY can get access to it and query the card clock frequency.
> 
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> Acked-by: Rob Herring <robh@kernel.org>

Doug and me talked about how to solve this beforehand, so obviously I'm in 
favour of doing it like this :-)

Reviewed-by: Heiko Stuebner <heiko@sntech.de>

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