From: Alexander Shiyan Date: Tue, 27 May 2014 09:04:46 +0000 (+0400) Subject: ARM: i.MX: Use of_clk_get_by_name() for timer clocks for DT case. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f4696752b1e966ea5b3a53ec088a237780612fc0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ARM: i.MX: Use of_clk_get_by_name() for timer clocks for DT case. Use of_clk_get_by_name() for timer clocks for DT case. This patch eliminates a lot of unneeded clk_register_clkdev() calls for GPT. Signed-off-by: Alexander Shiyan Signed-off-by: Shawn Guo --- diff --git a/arch/arm/mach-imx/clk-imx1.c b/arch/arm/mach-imx/clk-imx1.c index e9c391b32092..96b1eb6631f0 100644 --- a/arch/arm/mach-imx/clk-imx1.c +++ b/arch/arm/mach-imx/clk-imx1.c @@ -76,9 +76,6 @@ static void __init _mx1_clocks_init(unsigned long fref) if (IS_ERR(clk[i])) pr_err("imx1 clk %d: register failed with %ld\n", i, PTR_ERR(clk[i])); - - clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx-gpt.0"); - clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx-gpt.0"); } int __init mx1_clocks_init(unsigned long fref) @@ -87,6 +84,8 @@ int __init mx1_clocks_init(unsigned long fref) _mx1_clocks_init(fref); + clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx-gpt.0"); + clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx-gpt.0"); clk_register_clkdev(clk[IMX1_CLK_DMA_GATE], "ahb", "imx1-dma"); clk_register_clkdev(clk[IMX1_CLK_HCLK], "ipg", "imx1-dma"); clk_register_clkdev(clk[IMX1_CLK_PER1], "per", "imx1-uart.0"); diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c index ae578c096ad8..2423c09140c8 100644 --- a/arch/arm/mach-imx/clk-imx25.c +++ b/arch/arm/mach-imx/clk-imx25.c @@ -234,9 +234,6 @@ static int __init __mx25_clocks_init(unsigned long osc_rate) /* Clock source for gpt must be derived from AHB */ clk_set_parent(clk[per5_sel], clk[ahb]); - clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0"); - clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0"); - /* * Let's initially set up CLKO parent as ipg, since this configuration * is used on some imx25 board designs to clock the audio codec. @@ -250,6 +247,8 @@ int __init mx25_clocks_init(void) { __mx25_clocks_init(24000000); + clk_register_clkdev(clk[ipg], "ipg", "imx-gpt.0"); + clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0"); /* i.mx25 has the i.mx21 type uart */ clk_register_clkdev(clk[uart1_ipg], "ipg", "imx21-uart.0"); clk_register_clkdev(clk[uart_ipg_per], "per", "imx21-uart.0"); diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c index 4e958653b1fc..e293f6af8b6d 100644 --- a/arch/arm/mach-imx/clk-imx51-imx53.c +++ b/arch/arm/mach-imx/clk-imx51-imx53.c @@ -292,8 +292,6 @@ static void __init mx5_clocks_common_init(void __iomem *ccm_base) pr_err("i.MX5 clk %d: register failed with %ld\n", i, PTR_ERR(clk[i])); - clk_register_clkdev(clk[IMX5_CLK_GPT_HF_GATE], "per", "imx-gpt.0"); - clk_register_clkdev(clk[IMX5_CLK_GPT_IPG_GATE], "ipg", "imx-gpt.0"); clk_register_clkdev(clk[IMX5_CLK_UART1_PER_GATE], "per", "imx21-uart.0"); clk_register_clkdev(clk[IMX5_CLK_UART1_IPG_GATE], "ipg", "imx21-uart.0"); clk_register_clkdev(clk[IMX5_CLK_UART2_PER_GATE], "per", "imx21-uart.1"); diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 8556c787e59c..540f257007a4 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -442,8 +442,6 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) 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[enet_ref], "enet_ref", NULL); if ((imx_get_soc_revision() != IMX_CHIP_REVISION_1_0) || diff --git a/arch/arm/mach-imx/clk-imx6sl.c b/arch/arm/mach-imx/clk-imx6sl.c index 5408ca70c8d6..7431bfafb17e 100644 --- a/arch/arm/mach-imx/clk-imx6sl.c +++ b/arch/arm/mach-imx/clk-imx6sl.c @@ -357,9 +357,6 @@ static void __init imx6sl_clocks_init(struct device_node *ccm_node) clk_data.clk_num = ARRAY_SIZE(clks); of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); - clk_register_clkdev(clks[IMX6SL_CLK_GPT], "ipg", "imx-gpt.0"); - clk_register_clkdev(clks[IMX6SL_CLK_GPT_SERIAL], "per", "imx-gpt.0"); - /* Ensure the AHB clk is at 132MHz. */ ret = clk_set_rate(clks[IMX6SL_CLK_AHB], 132000000); if (ret) diff --git a/arch/arm/mach-imx/clk-imx6sx.c b/arch/arm/mach-imx/clk-imx6sx.c index 72f8902235d1..5211cf61abca 100644 --- a/arch/arm/mach-imx/clk-imx6sx.c +++ b/arch/arm/mach-imx/clk-imx6sx.c @@ -451,9 +451,6 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node) clk_data.clk_num = ARRAY_SIZE(clks); of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); - clk_register_clkdev(clks[IMX6SX_CLK_GPT_BUS], "ipg", "imx-gpt.0"); - clk_register_clkdev(clks[IMX6SX_CLK_GPT_SERIAL], "per", "imx-gpt.0"); - for (i = 0; i < ARRAY_SIZE(clks_init_on); i++) clk_prepare_enable(clks[clks_init_on[i]]); diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c index bed081e58262..2d96051de938 100644 --- a/arch/arm/mach-imx/time.c +++ b/arch/arm/mach-imx/time.c @@ -290,23 +290,20 @@ static int __init mxc_clockevent_init(struct clk *timer_clk) return 0; } -void __init mxc_timer_init(void __iomem *base, int irq) +static void __init _mxc_timer_init(void __iomem *base, int irq, + struct clk *clk_per, struct clk *clk_ipg) { uint32_t tctl_val; - struct clk *timer_clk; - struct clk *timer_ipg_clk; - timer_clk = clk_get_sys("imx-gpt.0", "per"); - if (IS_ERR(timer_clk)) { + if (IS_ERR(clk_per)) { pr_err("i.MX timer: unable to get clk\n"); return; } - timer_ipg_clk = clk_get_sys("imx-gpt.0", "ipg"); - if (!IS_ERR(timer_ipg_clk)) - clk_prepare_enable(timer_ipg_clk); + if (!IS_ERR(clk_ipg)) + clk_prepare_enable(clk_ipg); - clk_prepare_enable(timer_clk); + clk_prepare_enable(clk_per); timer_base = base; @@ -325,15 +322,24 @@ void __init mxc_timer_init(void __iomem *base, int irq) __raw_writel(tctl_val, timer_base + MXC_TCTL); /* init and register the timer to the framework */ - mxc_clocksource_init(timer_clk); - mxc_clockevent_init(timer_clk); + mxc_clocksource_init(clk_per); + mxc_clockevent_init(clk_per); /* Make irqs happen */ setup_irq(irq, &mxc_timer_irq); } +void __init mxc_timer_init(void __iomem *base, int irq) +{ + struct clk *clk_per = clk_get_sys("imx-gpt.0", "per"); + struct clk *clk_ipg = clk_get_sys("imx-gpt.0", "ipg"); + + _mxc_timer_init(base, irq, clk_per, clk_ipg); +} + void __init mxc_timer_init_dt(struct device_node *np) { + struct clk *clk_per, *clk_ipg; void __iomem *base; int irq; @@ -341,5 +347,8 @@ void __init mxc_timer_init_dt(struct device_node *np) WARN_ON(!base); irq = irq_of_parse_and_map(np, 0); - mxc_timer_init(base, irq); + clk_per = of_clk_get_by_name(np, "per"); + clk_ipg = of_clk_get_by_name(np, "ipg"); + + _mxc_timer_init(base, irq, clk_per, clk_ipg); }