From: Linus Walleij Date: Tue, 4 Jun 2013 23:18:40 +0000 (+0200) Subject: ARM: nomadik: add the new clocks to the device tree X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c641d4dfef6d462c6d66a6fb57700086cd2f0106;p=linux-beck.git ARM: nomadik: add the new clocks to the device tree This revamps the device tree to fit with the new clock implementation and brings it quite a bit closer to how the hardware actually works. After this the clock implementation knows about all clock gates and will gate off all unused clocks at boot time and save a bit of power. Signed-off-by: Linus Walleij --- diff --git a/arch/arm/boot/dts/ste-nomadik-s8815.dts b/arch/arm/boot/dts/ste-nomadik-s8815.dts index 638ec8df5802..fd573d2ac4d0 100644 --- a/arch/arm/boot/dts/ste-nomadik-s8815.dts +++ b/arch/arm/boot/dts/ste-nomadik-s8815.dts @@ -14,6 +14,12 @@ bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk"; }; + src@101e0000 { + /* These chrystal drivers are not used on this board */ + disable-sxtalo; + disable-mxtalo; + }; + pinctrl { /* Hog CD pins */ pinctrl-names = "default"; diff --git a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi index dbf476b638d0..a3acfa7b3dc9 100644 --- a/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi +++ b/arch/arm/boot/dts/ste-nomadik-stn8815.dtsi @@ -168,37 +168,464 @@ src: src@101e0000 { compatible = "stericsson,nomadik-src"; reg = <0x101e0000 0x1000>; - clocks { - /* - * Dummy clock for primecells - */ - pclk: pclk@0 { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <0>; - }; - /* - * The 2.4 MHz TIMCLK reference clock is active at - * boot time, this is actually the MXTALCLK @19.2 MHz - * divided by 8. This clock is used by the timers and - * watchdog. See page 105 ff. - */ - timclk: timclk@2.4M { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <2400000>; - }; - /* - * At boot time, PLL2 is set to generate a set of - * fixed clocks, one of them is CLK48, the 48 MHz - * clock, routed to the UART, MMC/SD, I2C, IrDA, - * USB and SSP blocks. - */ - clk48: clk48@48M { - #clock-cells = <0>; - compatible = "fixed-clock"; - clock-frequency = <48000000>; - }; + disable-sxtalo; + disable-mxtalo; + + /* + * MXTAL "Main Chrystal" is a chrystal oscillator @19.2 MHz + * that is parent of TIMCLK, PLL1 and PLL2 + */ + mxtal: mxtal@19.2M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <19200000>; + }; + + /* + * The 2.4 MHz TIMCLK reference clock is active at + * boot time, this is actually the MXTALCLK @19.2 MHz + * divided by 8. This clock is used by the timers and + * watchdog. See page 105 ff. + */ + timclk: timclk@2.4M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <8>; + clock-mult = <1>; + clocks = <&mxtal>; + }; + + /* PLL1 is locked to MXTALI and variable from 20.4 to 334 MHz */ + pll1: pll1@0 { + #clock-cells = <0>; + compatible = "st,nomadik-pll-clock"; + pll-id = <1>; + clocks = <&mxtal>; + }; + + /* HCLK divides the PLL1 with 1,2,3 or 4 */ + hclk: hclk@0 { + #clock-cells = <0>; + compatible = "st,nomadik-hclk-clock"; + clocks = <&pll1>; + }; + /* The PCLK domain uses HCLK right off */ + pclk: pclk@0 { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <1>; + clock-mult = <1>; + clocks = <&hclk>; + }; + + /* PLL2 is usually 864 MHz and divided into a few fixed rates */ + pll2: pll2@0 { + #clock-cells = <0>; + compatible = "st,nomadik-pll-clock"; + pll-id = <2>; + clocks = <&mxtal>; + }; + clk216: clk216@216M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <4>; + clock-mult = <1>; + clocks = <&pll2>; + }; + clk108: clk108@108M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <2>; + clock-mult = <1>; + clocks = <&clk216>; + }; + clk72: clk72@72M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + /* The data sheet does not say how this is derived */ + clock-div = <12>; + clock-mult = <1>; + clocks = <&pll2>; + }; + clk48: clk48@48M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + /* The data sheet does not say how this is derived */ + clock-div = <18>; + clock-mult = <1>; + clocks = <&pll2>; + }; + clk27: clk27@27M { + #clock-cells = <0>; + compatible = "fixed-factor-clock"; + clock-div = <4>; + clock-mult = <1>; + clocks = <&clk108>; + }; + + /* This apparently exists as well */ + ulpiclk: ulpiclk@60M { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <60000000>; + }; + + /* + * IP AMBA bus clocks, driving the bus side of the + * peripheral clocking, clock gates. + */ + + hclkdma0: hclkdma0@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <0>; + clocks = <&hclk>; + }; + hclksmc: hclksmc@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <1>; + clocks = <&hclk>; + }; + hclksdram: hclksdram@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <2>; + clocks = <&hclk>; + }; + hclkdma1: hclkdma1@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <3>; + clocks = <&hclk>; + }; + hclkclcd: hclkclcd@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <4>; + clocks = <&hclk>; + }; + pclkirda: pclkirda@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <5>; + clocks = <&pclk>; + }; + pclkssp: pclkssp@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <6>; + clocks = <&pclk>; + }; + pclkuart0: pclkuart0@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <7>; + clocks = <&pclk>; + }; + pclksdi: pclksdi@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <8>; + clocks = <&pclk>; + }; + pclki2c0: pclki2c0@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <9>; + clocks = <&pclk>; + }; + pclki2c1: pclki2c1@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <10>; + clocks = <&pclk>; + }; + pclkuart1: pclkuart1@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <11>; + clocks = <&pclk>; + }; + pclkmsp0: pclkmsp0@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <12>; + clocks = <&pclk>; + }; + hclkusb: hclkusb@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <13>; + clocks = <&hclk>; + }; + hclkdif: hclkdif@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <14>; + clocks = <&hclk>; + }; + hclksaa: hclksaa@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <15>; + clocks = <&hclk>; + }; + hclksva: hclksva@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <16>; + clocks = <&hclk>; + }; + pclkhsi: pclkhsi@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <17>; + clocks = <&pclk>; + }; + pclkxti: pclkxti@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <18>; + clocks = <&pclk>; + }; + pclkuart2: pclkuart2@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <19>; + clocks = <&pclk>; + }; + pclkmsp1: pclkmsp1@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <20>; + clocks = <&pclk>; + }; + pclkmsp2: pclkmsp2@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <21>; + clocks = <&pclk>; + }; + pclkowm: pclkowm@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <22>; + clocks = <&pclk>; + }; + hclkhpi: hclkhpi@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <23>; + clocks = <&hclk>; + }; + pclkske: pclkske@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <24>; + clocks = <&pclk>; + }; + pclkhsem: pclkhsem@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <25>; + clocks = <&pclk>; + }; + hclk3d: hclk3d@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <26>; + clocks = <&hclk>; + }; + hclkhash: hclkhash@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <27>; + clocks = <&hclk>; + }; + hclkcryp: hclkcryp@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <28>; + clocks = <&hclk>; + }; + pclkmshc: pclkmshc@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <29>; + clocks = <&pclk>; + }; + hclkusbm: hclkusbm@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <30>; + clocks = <&hclk>; + }; + hclkrng: hclkrng@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <31>; + clocks = <&hclk>; + }; + + /* IP kernel clocks */ + clcdclk: clcdclk@0 { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <36>; + clocks = <&clk72 &clk48>; + }; + irdaclk: irdaclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <37>; + clocks = <&clk48>; + }; + sspiclk: sspiclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <38>; + clocks = <&clk48>; + }; + uart0clk: uart0clk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <39>; + clocks = <&clk48>; + }; + sdiclk: sdiclk@48M { + /* Also called MCCLK in some documents */ + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <40>; + clocks = <&clk48>; + }; + i2c0clk: i2c0clk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <41>; + clocks = <&clk48>; + }; + i2c1clk: i2c1clk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <42>; + clocks = <&clk48>; + }; + uart1clk: uart1clk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <43>; + clocks = <&clk48>; + }; + mspclk0: mspclk0@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <44>; + clocks = <&clk48>; + }; + usbclk: usbclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <45>; + clocks = <&clk48>; /* 48 MHz not ULPI */ + }; + difclk: difclk@72M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <46>; + clocks = <&clk72>; + }; + ipi2cclk: ipi2cclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <47>; + clocks = <&clk48>; /* Guess */ + }; + ipbmcclk: ipbmcclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <48>; + clocks = <&clk48>; /* Guess */ + }; + hsiclkrx: hsiclkrx@216M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <49>; + clocks = <&clk216>; + }; + hsiclktx: hsiclktx@108M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <50>; + clocks = <&clk108>; + }; + uart2clk: uart2clk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <51>; + clocks = <&clk48>; + }; + mspclk1: mspclk1@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <52>; + clocks = <&clk48>; + }; + mspclk2: mspclk2@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <53>; + clocks = <&clk48>; + }; + owmclk: owmclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <54>; + clocks = <&clk48>; /* Guess */ + }; + skeclk: skeclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <56>; + clocks = <&clk48>; /* Guess */ + }; + x3dclk: x3dclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <58>; + clocks = <&clk48>; /* Guess */ + }; + pclkmsp3: pclkmsp3@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <59>; + clocks = <&pclk>; + }; + mspclk3: mspclk3@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <60>; + clocks = <&clk48>; + }; + mshcclk: mshcclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <61>; + clocks = <&clk48>; /* Guess */ + }; + usbmclk: usbmclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <62>; + /* Stated as "48 MHz not ULPI clock" */ + clocks = <&clk48>; + }; + rngcclk: rngcclk@48M { + #clock-cells = <0>; + compatible = "st,nomadik-src-clock"; + clock-id = <63>; + clocks = <&clk48>; /* Guess */ }; }; @@ -212,7 +639,7 @@ <0x41000000 0x2000>, /* NAND Base ADDR */ <0x40800000 0x2000>; /* NAND Base CMD */ reg-names = "fsmc_regs", "nand_data", "nand_addr", "nand_cmd"; - clocks = <&pclk>; + clocks = <&hclksmc>; status = "okay"; partition@0 { @@ -334,7 +761,7 @@ reg = <0x101fd000 0x1000>; interrupt-parent = <&vica>; interrupts = <12>; - clocks = <&clk48>, <&pclk>; + clocks = <&uart0clk>, <&pclkuart0>; clock-names = "uartclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart0_default_mux>; @@ -345,7 +772,7 @@ reg = <0x101fb000 0x1000>; interrupt-parent = <&vica>; interrupts = <17>; - clocks = <&clk48>, <&pclk>; + clocks = <&uart1clk>, <&pclkuart1>; clock-names = "uartclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart1_default_mux>; @@ -356,7 +783,7 @@ reg = <0x101f2000 0x1000>; interrupt-parent = <&vica>; interrupts = <28>; - clocks = <&clk48>, <&pclk>; + clocks = <&uart2clk>, <&pclkuart2>; clock-names = "uartclk", "apb_pclk"; status = "disabled"; }; @@ -364,7 +791,7 @@ rng: rng@101b0000 { compatible = "arm,primecell"; reg = <0x101b0000 0x1000>; - clocks = <&clk48>, <&pclk>; + clocks = <&rngcclk>, <&hclkrng>; clock-names = "rng", "apb_pclk"; }; @@ -380,7 +807,7 @@ mmcsd: sdi@101f6000 { compatible = "arm,pl18x", "arm,primecell"; reg = <0x101f6000 0x1000>; - clocks = <&clk48>, <&pclk>; + clocks = <&sdiclk>, <&pclksdi>; clock-names = "mclk", "apb_pclk"; interrupt-parent = <&vica>; interrupts = <22>;