ARM: imx6q: replace clk_register_clkdev with clock DT lookup

It really becomes an maintenance issue that every time a device needs
to look up (clk_get) a clock we have to patch kernel clock file to call
clk_register_clkdev for that clock.

Since clock DT support which is meant to resolve clock lookup in device
tree is in place, the patch moves imx6q client devices' clock lookup
over to device tree, so that any new lookup to be added at later time
can just get done in DT instead of kernel.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

2 files changed, 5 insertions, 40 deletions

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index ea89520b6e2..bbc71f57b92 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -157,6 +157,7 @@ enum mx6q_clks {
 };
 
 static struct clk *clk[clk_max];
+static struct clk_onecell_data clk_data;
 
 static enum mx6q_clks const clks_init_on[] __initconst = {
 	mmdc_ch0_axi, rom,
@@ -392,48 +393,13 @@ int __init mx6q_clocks_init(void)
 			pr_err("i.MX6q clk %d: register failed with %ld\n",
 				i, PTR_ERR(clk[i]));
 
+	clk_data.clks = clk;
+	clk_data.clk_num = ARRAY_SIZE(clk);
+	of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+
 	clk_register_clkdev(clk[gpt_ipg], "ipg", "imx-gpt.0");
 	clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0");
 	clk_register_clkdev(clk[twd], NULL, "smp_twd");
-	clk_register_clkdev(clk[apbh_dma], NULL, "110000.dma-apbh");
-	clk_register_clkdev(clk[per1_bch], "per1_bch", "112000.gpmi-nand");
-	clk_register_clkdev(clk[gpmi_bch_apb], "gpmi_bch_apb", "112000.gpmi-nand");
-	clk_register_clkdev(clk[gpmi_bch], "gpmi_bch", "112000.gpmi-nand");
-	clk_register_clkdev(clk[gpmi_apb], "gpmi_apb", "112000.gpmi-nand");
-	clk_register_clkdev(clk[gpmi_io], "gpmi_io", "112000.gpmi-nand");
-	clk_register_clkdev(clk[usboh3], NULL, "2184000.usb");
-	clk_register_clkdev(clk[usboh3], NULL, "2184200.usb");
-	clk_register_clkdev(clk[usboh3], NULL, "2184400.usb");
-	clk_register_clkdev(clk[usboh3], NULL, "2184600.usb");
-	clk_register_clkdev(clk[usbphy1], NULL, "20c9000.usbphy");
-	clk_register_clkdev(clk[usbphy2], NULL, "20ca000.usbphy");
-	clk_register_clkdev(clk[uart_serial], "per", "2020000.serial");
-	clk_register_clkdev(clk[uart_ipg], "ipg", "2020000.serial");
-	clk_register_clkdev(clk[uart_serial], "per", "21e8000.serial");
-	clk_register_clkdev(clk[uart_ipg], "ipg", "21e8000.serial");
-	clk_register_clkdev(clk[uart_serial], "per", "21ec000.serial");
-	clk_register_clkdev(clk[uart_ipg], "ipg", "21ec000.serial");
-	clk_register_clkdev(clk[uart_serial], "per", "21f0000.serial");
-	clk_register_clkdev(clk[uart_ipg], "ipg", "21f0000.serial");
-	clk_register_clkdev(clk[uart_serial], "per", "21f4000.serial");
-	clk_register_clkdev(clk[uart_ipg], "ipg", "21f4000.serial");
-	clk_register_clkdev(clk[enet], NULL, "2188000.ethernet");
-	clk_register_clkdev(clk[usdhc1], NULL, "2190000.usdhc");
-	clk_register_clkdev(clk[usdhc2], NULL, "2194000.usdhc");
-	clk_register_clkdev(clk[usdhc3], NULL, "2198000.usdhc");
-	clk_register_clkdev(clk[usdhc4], NULL, "219c000.usdhc");
-	clk_register_clkdev(clk[i2c1], NULL, "21a0000.i2c");
-	clk_register_clkdev(clk[i2c2], NULL, "21a4000.i2c");
-	clk_register_clkdev(clk[i2c3], NULL, "21a8000.i2c");
-	clk_register_clkdev(clk[ecspi1], NULL, "2008000.ecspi");
-	clk_register_clkdev(clk[ecspi2], NULL, "200c000.ecspi");
-	clk_register_clkdev(clk[ecspi3], NULL, "2010000.ecspi");
-	clk_register_clkdev(clk[ecspi4], NULL, "2014000.ecspi");
-	clk_register_clkdev(clk[ecspi5], NULL, "2018000.ecspi");
-	clk_register_clkdev(clk[sdma], NULL, "20ec000.sdma");
-	clk_register_clkdev(clk[dummy], NULL, "20bc000.wdog");
-	clk_register_clkdev(clk[dummy], NULL, "20c0000.wdog");
-	clk_register_clkdev(clk[ssi1_ipg], NULL, "2028000.ssi");
 	clk_register_clkdev(clk[cko1_sel], "cko1_sel", NULL);
 	clk_register_clkdev(clk[ahb], "ahb", NULL);
 	clk_register_clkdev(clk[cko1], "cko1", NULL);
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 5ec0608f2a7..0b30aa8799d 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -100,7 +100,6 @@ static void __init imx6q_sabrelite_cko1_setup(void)
 	clk_set_parent(cko1_sel, ahb);
 	rate = clk_round_rate(cko1, 16000000);
 	clk_set_rate(cko1, rate);
-	clk_register_clkdev(cko1, NULL, "0-000a");
 put_clk:
 	if (!IS_ERR(cko1_sel))
 		clk_put(cko1_sel);