| Message ID | 1402345355-5682-1-git-send-email-peter.griffin@linaro.org |
|---|---|
| State | New |
| Headers | show |
Thanks Pete for the patch. Patch looks good for me. Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> On 09/06/14 21:22, Peter Griffin wrote: > This patch fixes two problems: - > > 1) The device tree isn't currently providing sti-ethclk which is > required by the dwmac glue code to correctly configure the ethernet > PHY clock speed. > > This means depending on what the bootloader/jtag has > configured this clock to, and what switch/hub the board is plugged > into you most likely will NOT successfully negotiate a ethernet link. > > 2) The stmmaceth clock was associated with the wrong clock. It was > referencing the PHY clock rather than the interconnect clock which > clocks the IP. > > This patch also brings us closer to not having to boot the upstream > kernel with the clk_ignore_unused parameter. > > Signed-off-by: Peter Griffin <peter.griffin@linaro.org> > --- > arch/arm/boot/dts/stih415.dtsi | 8 ++++---- > arch/arm/boot/dts/stih416.dtsi | 8 ++++---- > include/dt-bindings/clock/stih415-clks.h | 1 + > include/dt-bindings/clock/stih416-clks.h | 1 + > 4 files changed, 10 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/boot/dts/stih415.dtsi b/arch/arm/boot/dts/stih415.dtsi > index c81dce4..768bf27 100644 > --- a/arch/arm/boot/dts/stih415.dtsi > +++ b/arch/arm/boot/dts/stih415.dtsi > @@ -169,8 +169,8 @@ > > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mii0>; > - clock-names = "stmmaceth"; > - clocks = <&clk_s_a1_ls CLK_GMAC0_PHY>; > + clock-names = "stmmaceth", "sti-ethclk"; > + clocks = <&clk_s_a1_ls CLK_ICN_IF_2>, <&clk_s_a1_ls CLK_GMAC0_PHY>; > }; > > ethernet1: dwmac@fef08000 { > @@ -189,11 +189,11 @@ > st,syscon = <&syscfg_sbc>; > > resets = <&softreset STIH415_ETH1_SOFTRESET>; > - reset-names = "stmmaceth"; > + reset-names = "stmmaceth", "sti-ethclk"; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mii1>; > clock-names = "stmmaceth"; > - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; > + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; > }; > > rc: rc@fe518000 { > diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi > index 6473287..98c43cc 100644 > --- a/arch/arm/boot/dts/stih416.dtsi > +++ b/arch/arm/boot/dts/stih416.dtsi > @@ -175,8 +175,8 @@ > reset-names = "stmmaceth"; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mii0>; > - clock-names = "stmmaceth"; > - clocks = <&clk_s_a1_ls CLK_GMAC0_PHY>; > + clock-names = "stmmaceth", "sti-ethclk"; > + clocks = <&clk_s_a1_ls CLK_ICN_IF_2>, <&clk_s_a1_ls CLK_GMAC0_PHY>; > }; > > ethernet1: dwmac@fef08000 { > @@ -197,8 +197,8 @@ > reset-names = "stmmaceth"; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mii1>; > - clock-names = "stmmaceth"; > - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; > + clock-names = "stmmaceth", "sti-ethclk"; > + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; > }; > > rc: rc@fe518000 { > diff --git a/include/dt-bindings/clock/stih415-clks.h b/include/dt-bindings/clock/stih415-clks.h > index 0d2c739..d80caa6 100644 > --- a/include/dt-bindings/clock/stih415-clks.h > +++ b/include/dt-bindings/clock/stih415-clks.h > @@ -10,6 +10,7 @@ > #define CLK_ETH1_PHY 4 > > /* CLOCKGEN A1 */ > +#define CLK_ICN_IF_2 0 > #define CLK_GMAC0_PHY 3 > > #endif > diff --git a/include/dt-bindings/clock/stih416-clks.h b/include/dt-bindings/clock/stih416-clks.h > index 552c779..f9bdbd1 100644 > --- a/include/dt-bindings/clock/stih416-clks.h > +++ b/include/dt-bindings/clock/stih416-clks.h > @@ -10,6 +10,7 @@ > #define CLK_ETH1_PHY 4 > > /* CLOCKGEN A1 */ > +#define CLK_ICN_IF_2 0 > #define CLK_GMAC0_PHY 3 > > #endif > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
> This patch fixes two problems: - > > 1) The device tree isn't currently providing sti-ethclk which is > required by the dwmac glue code to correctly configure the ethernet > PHY clock speed. > > This means depending on what the bootloader/jtag has > configured this clock to, and what switch/hub the board is plugged > into you most likely will NOT successfully negotiate a ethernet link. > > 2) The stmmaceth clock was associated with the wrong clock. It was > referencing the PHY clock rather than the interconnect clock which > clocks the IP. > > This patch also brings us closer to not having to boot the upstream > kernel with the clk_ignore_unused parameter. > > Signed-off-by: Peter Griffin <peter.griffin@linaro.org> > --- > arch/arm/boot/dts/stih415.dtsi | 8 ++++---- > arch/arm/boot/dts/stih416.dtsi | 8 ++++---- > include/dt-bindings/clock/stih415-clks.h | 1 + > include/dt-bindings/clock/stih416-clks.h | 1 + > 4 files changed, 10 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/boot/dts/stih415.dtsi b/arch/arm/boot/dts/stih415.dtsi > index c81dce4..768bf27 100644 > --- a/arch/arm/boot/dts/stih415.dtsi > +++ b/arch/arm/boot/dts/stih415.dtsi [...] > ethernet1: dwmac@fef08000 { > @@ -189,11 +189,11 @@ > st,syscon = <&syscfg_sbc>; > > resets = <&softreset STIH415_ETH1_SOFTRESET>; > - reset-names = "stmmaceth"; > + reset-names = "stmmaceth", "sti-ethclk"; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_mii1>; > clock-names = "stmmaceth"; > - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; > + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; This looks wrong to me. You appear to have changed the reset-names instead of the clock-names here. [...]
Hi Lee, > > ethernet1: dwmac@fef08000 { > > @@ -189,11 +189,11 @@ > > st,syscon = <&syscfg_sbc>; > > > > resets = <&softreset STIH415_ETH1_SOFTRESET>; > > - reset-names = "stmmaceth"; > > + reset-names = "stmmaceth", "sti-ethclk"; > > pinctrl-names = "default"; > > pinctrl-0 = <&pinctrl_mii1>; > > clock-names = "stmmaceth"; > > - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; > > + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; > > This looks wrong to me. You appear to have changed the reset-names > instead of the clock-names here. Whoops, your right, I'll send a V2 shortly. Pete. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
diff --git a/arch/arm/boot/dts/stih415.dtsi b/arch/arm/boot/dts/stih415.dtsi index c81dce4..768bf27 100644 --- a/arch/arm/boot/dts/stih415.dtsi +++ b/arch/arm/boot/dts/stih415.dtsi @@ -169,8 +169,8 @@ pinctrl-names = "default"; pinctrl-0 = <&pinctrl_mii0>; - clock-names = "stmmaceth"; - clocks = <&clk_s_a1_ls CLK_GMAC0_PHY>; + clock-names = "stmmaceth", "sti-ethclk"; + clocks = <&clk_s_a1_ls CLK_ICN_IF_2>, <&clk_s_a1_ls CLK_GMAC0_PHY>; }; ethernet1: dwmac@fef08000 { @@ -189,11 +189,11 @@ st,syscon = <&syscfg_sbc>; resets = <&softreset STIH415_ETH1_SOFTRESET>; - reset-names = "stmmaceth"; + reset-names = "stmmaceth", "sti-ethclk"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_mii1>; clock-names = "stmmaceth"; - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; }; rc: rc@fe518000 { diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi index 6473287..98c43cc 100644 --- a/arch/arm/boot/dts/stih416.dtsi +++ b/arch/arm/boot/dts/stih416.dtsi @@ -175,8 +175,8 @@ reset-names = "stmmaceth"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_mii0>; - clock-names = "stmmaceth"; - clocks = <&clk_s_a1_ls CLK_GMAC0_PHY>; + clock-names = "stmmaceth", "sti-ethclk"; + clocks = <&clk_s_a1_ls CLK_ICN_IF_2>, <&clk_s_a1_ls CLK_GMAC0_PHY>; }; ethernet1: dwmac@fef08000 { @@ -197,8 +197,8 @@ reset-names = "stmmaceth"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_mii1>; - clock-names = "stmmaceth"; - clocks = <&clk_s_a0_ls CLK_ETH1_PHY>; + clock-names = "stmmaceth", "sti-ethclk"; + clocks = <&clk_s_a0_ls CLK_ICN_REG>, <&clk_s_a0_ls CLK_ETH1_PHY>; }; rc: rc@fe518000 { diff --git a/include/dt-bindings/clock/stih415-clks.h b/include/dt-bindings/clock/stih415-clks.h index 0d2c739..d80caa6 100644 --- a/include/dt-bindings/clock/stih415-clks.h +++ b/include/dt-bindings/clock/stih415-clks.h @@ -10,6 +10,7 @@ #define CLK_ETH1_PHY 4 /* CLOCKGEN A1 */ +#define CLK_ICN_IF_2 0 #define CLK_GMAC0_PHY 3 #endif diff --git a/include/dt-bindings/clock/stih416-clks.h b/include/dt-bindings/clock/stih416-clks.h index 552c779..f9bdbd1 100644 --- a/include/dt-bindings/clock/stih416-clks.h +++ b/include/dt-bindings/clock/stih416-clks.h @@ -10,6 +10,7 @@ #define CLK_ETH1_PHY 4 /* CLOCKGEN A1 */ +#define CLK_ICN_IF_2 0 #define CLK_GMAC0_PHY 3 #endif
This patch fixes two problems: - 1) The device tree isn't currently providing sti-ethclk which is required by the dwmac glue code to correctly configure the ethernet PHY clock speed. This means depending on what the bootloader/jtag has configured this clock to, and what switch/hub the board is plugged into you most likely will NOT successfully negotiate a ethernet link. 2) The stmmaceth clock was associated with the wrong clock. It was referencing the PHY clock rather than the interconnect clock which clocks the IP. This patch also brings us closer to not having to boot the upstream kernel with the clk_ignore_unused parameter. Signed-off-by: Peter Griffin <peter.griffin@linaro.org> --- arch/arm/boot/dts/stih415.dtsi | 8 ++++---- arch/arm/boot/dts/stih416.dtsi | 8 ++++---- include/dt-bindings/clock/stih415-clks.h | 1 + include/dt-bindings/clock/stih416-clks.h | 1 + 4 files changed, 10 insertions(+), 8 deletions(-)