From 7a9cc1ad213df8a90a0753d522fa53f95e21fc10 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Tue, 29 Oct 2013 15:15:52 +1000 Subject: [PATCH] ARM: imx: add clocking support code for the IMX50 SoC Add code to support the specific clock tree of the Freescale IMX50 SoC. It can use much of the common IMX51/IMX53 clocking code. Signed-off-by: Greg Ungerer Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx51-imx53.c | 58 +++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/arch/arm/mach-imx/clk-imx51-imx53.c b/arch/arm/mach-imx/clk-imx51-imx53.c index ce37af26ff8c..219c65e3f6cc 100644 --- a/arch/arm/mach-imx/clk-imx51-imx53.c +++ b/arch/arm/mach-imx/clk-imx51-imx53.c @@ -365,6 +365,64 @@ static void __init mx5_clocks_common_init(unsigned long rate_ckil, clk_prepare_enable(clk[tmax3]); /* esdhc1, esdhc4 */ } +static void __init mx50_clocks_init(struct device_node *np) +{ + void __iomem *base; + unsigned long r; + int i, irq; + + clk[pll1_sw] = imx_clk_pllv2("pll1_sw", "osc", MX53_DPLL1_BASE); + clk[pll2_sw] = imx_clk_pllv2("pll2_sw", "osc", MX53_DPLL2_BASE); + clk[pll3_sw] = imx_clk_pllv2("pll3_sw", "osc", MX53_DPLL3_BASE); + + clk[esdhc1_per_gate] = imx_clk_gate2("esdhc1_per_gate", "esdhc_a_podf", MXC_CCM_CCGR3, 2); + clk[esdhc2_per_gate] = imx_clk_gate2("esdhc2_per_gate", "esdhc_c_sel", MXC_CCM_CCGR3, 6); + clk[esdhc3_per_gate] = imx_clk_gate2("esdhc3_per_gate", "esdhc_b_podf", MXC_CCM_CCGR3, 10); + clk[esdhc4_per_gate] = imx_clk_gate2("esdhc4_per_gate", "esdhc_d_sel", MXC_CCM_CCGR3, 14); + clk[usb_phy1_gate] = imx_clk_gate2("usb_phy1_gate", "usb_phy_sel", MXC_CCM_CCGR4, 10); + clk[usb_phy2_gate] = imx_clk_gate2("usb_phy2_gate", "usb_phy_sel", MXC_CCM_CCGR4, 12); + clk[i2c3_gate] = imx_clk_gate2("i2c3_gate", "per_root", MXC_CCM_CCGR1, 22); + + clk[cko1_sel] = imx_clk_mux("cko1_sel", MXC_CCM_CCOSR, 0, 4, + mx53_cko1_sel, ARRAY_SIZE(mx53_cko1_sel)); + clk[cko1_podf] = imx_clk_divider("cko1_podf", "cko1_sel", MXC_CCM_CCOSR, 4, 3); + clk[cko1] = imx_clk_gate2("cko1", "cko1_podf", MXC_CCM_CCOSR, 7); + + clk[cko2_sel] = imx_clk_mux("cko2_sel", MXC_CCM_CCOSR, 16, 5, + mx53_cko2_sel, ARRAY_SIZE(mx53_cko2_sel)); + clk[cko2_podf] = imx_clk_divider("cko2_podf", "cko2_sel", MXC_CCM_CCOSR, 21, 3); + clk[cko2] = imx_clk_gate2("cko2", "cko2_podf", MXC_CCM_CCOSR, 24); + + for (i = 0; i < ARRAY_SIZE(clk); i++) + if (IS_ERR(clk[i])) + pr_err("i.MX50 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); + + mx5_clocks_common_init(0, 0, 0, 0); + + /* set SDHC root clock to 200MHZ*/ + clk_set_rate(clk[esdhc_a_podf], 200000000); + clk_set_rate(clk[esdhc_b_podf], 200000000); + + clk_prepare_enable(clk[iim_gate]); + imx_print_silicon_rev("i.MX50", IMX_CHIP_REVISION_1_1); + clk_disable_unprepare(clk[iim_gate]); + + r = clk_round_rate(clk[usboh3_per_gate], 54000000); + clk_set_rate(clk[usboh3_per_gate], r); + + np = of_find_compatible_node(NULL, NULL, "fsl,imx50-gpt"); + base = of_iomap(np, 0); + WARN_ON(!base); + irq = irq_of_parse_and_map(np, 0); + mxc_timer_init(base, irq); +} +CLK_OF_DECLARE(imx50_ccm, "fsl,imx50-ccm", mx50_clocks_init); + int __init mx51_clocks_init(unsigned long rate_ckil, unsigned long rate_osc, unsigned long rate_ckih1, unsigned long rate_ckih2) { -- 2.11.0