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authorGreg Ungerer <gerg@uclinux.org>2013-10-29 09:15:52 +0400
committerShawn Guo <shawn.guo@linaro.org>2013-12-09 09:18:20 +0400
commit7a9cc1ad213df8a90a0753d522fa53f95e21fc10 (patch)
treea4490eb9284a54af389c87fb521ac979330c9971 /arch/arm/mach-imx
parentad364a7014cb2548ccc7fabc2c1f63e41cb6dd67 (diff)
downloadlinux-7a9cc1ad213df8a90a0753d522fa53f95e21fc10.tar.xz
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 <gerg@uclinux.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/clk-imx51-imx53.c58
1 files changed, 58 insertions, 0 deletions
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)
{