clk: exynos5250: register clocks using common clock framework

The Exynos5250 clocks are statically listed and registered using the
Samsung specific common clock helper functions. Both device tree based
clock lookup and clkdev based clock lookups are supported.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

Documentation/devicetree/bindings/clock/exynos5250-clock.txt

+* Samsung Exynos5250 Clock Controller
+
+The Exynos5250 clock controller generates and supplies clock to various
+controllers within the Exynos5250 SoC.
+
+Required Properties:
+
+- comptible: should be one of the following.
+  - "samsung,exynos5250-clock" - controller compatible with Exynos5250 SoC.
+
+- reg: physical base address of the controller and length of memory mapped
+  region.
+
+- #clock-cells: should be 1.
+
+The following is the list of clocks generated by the controller. Each clock is
+assigned an identifier and client nodes use this identifier to specify the
+clock which they consume.
+
+
+       [Core Clocks]
+
+  Clock			ID
+  ----------------------------
+
+  fin_pll		1
+
+  [Clock Gate for Special Clocks]
+
+  Clock			ID
+  ----------------------------
+
+  sclk_cam_bayer	128
+  sclk_cam0		129
+  sclk_cam1		130
+  sclk_gscl_wa		131
+  sclk_gscl_wb		132
+  sclk_fimd1		133
+  sclk_mipi1		134
+  sclk_dp		135
+  sclk_hdmi		136
+  sclk_pixel		137
+  sclk_audio0		138
+  sclk_mmc0		139
+  sclk_mmc1		140
+  sclk_mmc2		141
+  sclk_mmc3		142
+  sclk_sata		143
+  sclk_usb3		144
+  sclk_jpeg		145
+  sclk_uart0		146
+  sclk_uart1		147
+  sclk_uart2		148
+  sclk_uart3		149
+  sclk_pwm		150
+  sclk_audio1		151
+  sclk_audio2		152
+  sclk_spdif		153
+  sclk_spi0		154
+  sclk_spi1		155
+  sclk_spi2		156
+
+
+   [Peripheral Clock Gates]
+
+  Clock			ID
+  ----------------------------
+
+  gscl0			256
+  gscl1			257
+  gscl2			258
+  gscl3			259
+  gscl_wa		260
+  gscl_wb		261
+  smmu_gscl0		262
+  smmu_gscl1		263
+  smmu_gscl2		264
+  smmu_gscl3		265
+  mfc			266
+  smmu_mfcl		267
+  smmu_mfcr		268
+  rotator		269
+  jpeg			270
+  mdma1			271
+  smmu_rotator		272
+  smmu_jpeg		273
+  smmu_mdma1		274
+  pdma0			275
+  pdma1			276
+  sata			277
+  usbotg		278
+  mipi_hsi		279
+  sdmmc0		280
+  sdmmc1		281
+  sdmmc2		282
+  sdmmc3		283
+  sromc			284
+  usb2			285
+  usb3			286
+  sata_phyctrl		287
+  sata_phyi2c		288
+  uart0			289
+  uart1			290
+  uart2			291
+  uart3			292
+  uart4			293
+  i2c0			294
+  i2c1			295
+  i2c2			296
+  i2c3			297
+  i2c4			298
+  i2c5			299
+  i2c6			300
+  i2c7			301
+  i2c_hdmi		302
+  adc			303
+  spi0			304
+  spi1			305
+  spi2			306
+  i2s1			307
+  i2s2			308
+  pcm1			309
+  pcm2			310
+  pwm			311
+  spdif			312
+  ac97			313
+  hsi2c0		314
+  hsi2c1		315
+  hs12c2		316
+  hs12c3		317
+  chipid		318
+  sysreg		319
+  pmu			320
+  cmu_top		321
+  cmu_core		322
+  cmu_mem		323
+  tzpc0			324
+  tzpc1			325
+  tzpc2			326
+  tzpc3			327
+  tzpc4			328
+  tzpc5			329
+  tzpc6			330
+  tzpc7			331
+  tzpc8			332
+  tzpc9			333
+  hdmi_cec		334
+  mct			335
+  wdt			336
+  rtc			337
+  tmu			338
+
+Example 1: An example of a clock controller node is listed below.
+
+	clock: clock-controller@0x10010000 {
+		compatible = "samsung,exynos5250-clock";
+		reg = <0x10010000 0x30000>;
+		#clock-cells = <1>;
+	};
+
+Example 2: UART controller node that consumes the clock generated by the clock
+	   controller. Refer to the standard clock bindings for information
+	   about 'clocks' and 'clock-names' property.
+
+	serial@13820000 {
+		compatible = "samsung,exynos4210-uart";
+		reg = <0x13820000 0x100>;
+		interrupts = <0 54 0>;
+		clocks = <&clock 314>, <&clock 153>;
+		clock-names = "uart", "clk_uart_baud0";
+	};

drivers/clk/samsung/Makefile

@@ -4,3 +4,4 @@
 
 obj-$(CONFIG_COMMON_CLK)	+= clk.o clk-pll.o
 obj-$(CONFIG_ARCH_EXYNOS4)	+= clk-exynos4.o
+obj-$(CONFIG_SOC_EXYNOS5250)	+= clk-exynos5250.o