From 1bf4b15b1975f4554cb3346dc82b02f5f4a1271b Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Tue, 17 Mar 2020 09:45:24 -0700 Subject: [PATCH] clk: ti: Fix dm814x clkctrl for ethernet We are missing alwon ethernet clock for dm814x and this prevents us from probing the CPSW with device tree only data. Looks like Ethernet currently only works if it has been enabled in the bootloader. Looks like relying on the bootloader clocks is not an issue with the mainline kernel currently, but it will be an issue when configuring CPSW Ethernet to probe with device tree data only as we will be managing the clocks. Fixes: 26ca2e973844 ("clk: ti: dm814: add clkctrl clock data") Cc: linux-clk@vger.kernel.org Cc: Graeme Smecher Cc: Grygorii Strashko Cc: Michael Turquette Cc: Stephen Boyd Cc: Tero Kristo Acked-by: Stephen Boyd Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/dm814x-clocks.dtsi | 14 ++++++++++++++ drivers/clk/ti/clk-814x.c | 7 ++++++- include/dt-bindings/clock/dm814.h | 5 +++++ 3 files changed, 25 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/dm814x-clocks.dtsi b/arch/arm/boot/dts/dm814x-clocks.dtsi index e5e4d0affefa..f7939f43413b 100644 --- a/arch/arm/boot/dts/dm814x-clocks.dtsi +++ b/arch/arm/boot/dts/dm814x-clocks.dtsi @@ -362,4 +362,18 @@ #clock-cells = <2>; }; }; + + alwon_ethernet_cm: alwon_ethernet_cm@15d4 { + compatible = "ti,omap4-cm"; + reg = <0x15d4 0x4>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x15d4 0x4>; + + alwon_ethernet_clkctrl: clk@0 { + compatible = "ti,clkctrl"; + reg = <0 0x4>; + #clock-cells = <2>; + }; + }; }; diff --git a/drivers/clk/ti/clk-814x.c b/drivers/clk/ti/clk-814x.c index 087cfa75ac24..4f8bd34ec1a5 100644 --- a/drivers/clk/ti/clk-814x.c +++ b/drivers/clk/ti/clk-814x.c @@ -25,7 +25,6 @@ static const struct omap_clkctrl_reg_data dm814_alwon_clkctrl_regs[] __initconst { DM814_WD_TIMER_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, { DM814_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk10_ck" }, { DM814_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk6_ck" }, - { DM814_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" }, { DM814_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "mpu_ck" }, { DM814_RTC_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sysclk18_ck" }, { DM814_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "sysclk4_ck" }, @@ -39,9 +38,15 @@ static const struct omap_clkctrl_reg_data dm814_alwon_clkctrl_regs[] __initconst { 0 }, }; +static const struct +omap_clkctrl_reg_data dm814_alwon_ethernet_clkctrl_regs[] __initconst = { + { 0, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" }, +}; + const struct omap_clkctrl_data dm814_clkctrl_data[] __initconst = { { 0x48180500, dm814_default_clkctrl_regs }, { 0x48181400, dm814_alwon_clkctrl_regs }, + { 0x481815d4, dm814_alwon_ethernet_clkctrl_regs }, { 0 }, }; diff --git a/include/dt-bindings/clock/dm814.h b/include/dt-bindings/clock/dm814.h index f0f04e0a249e..33b8826d936b 100644 --- a/include/dt-bindings/clock/dm814.h +++ b/include/dt-bindings/clock/dm814.h @@ -34,4 +34,9 @@ #define DM814_MMC2_CLKCTRL DM814_CLKCTRL_INDEX(0x220) #define DM814_MMC3_CLKCTRL DM814_CLKCTRL_INDEX(0x224) +/* alwon_ethernet clocks */ +#define DM814_ETHERNET_CLKCTRL_OFFSET 0x1d4 +#define DM814_ETHERNET_CLKCTRL_INDEX(offset) ((offset) - DM814_ETHERNET_CLKCTRL_OFFSET) +#define DM814_ETHERNET_CPGMAC0_CLKCTRL DM814_ETHERNET_CLKCTRL_INDEX(0x1d4) + #endif