}
}
+static bool pll6_bypassed(struct device_node *node)
+{
+ int index, ret, num_clocks;
+ struct of_phandle_args clkspec;
+
+ num_clocks = of_count_phandle_with_args(node, "assigned-clocks",
+ "#clock-cells");
+ if (num_clocks < 0)
+ return false;
+
+ for (index = 0; index < num_clocks; index++) {
+ ret = of_parse_phandle_with_args(node, "assigned-clocks",
+ "#clock-cells", index,
+ &clkspec);
+ if (ret < 0)
+ return false;
+
+ if (clkspec.np == node &&
+ clkspec.args[0] == IMX6QDL_PLL6_BYPASS)
+ break;
+ }
+
+ /* PLL6 bypass is not part of the assigned clock list */
+ if (index == num_clocks)
+ return false;
+
+ ret = of_parse_phandle_with_args(node, "assigned-clock-parents",
+ "#clock-cells", index, &clkspec);
+
+ if (clkspec.args[0] != IMX6QDL_CLK_PLL6)
+ return true;
+
+ return false;
+}
+
#define CCM_CCDR 0x04
#define CCM_CCSR 0x0c
#define CCM_CS2CDR 0x2c
int ret;
clk[IMX6QDL_CLK_DUMMY] = imx_clk_fixed("dummy", 0);
- clk[IMX6QDL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0);
- clk[IMX6QDL_CLK_CKIH] = imx_obtain_fixed_clock("ckih1", 0);
- clk[IMX6QDL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0);
+ clk[IMX6QDL_CLK_CKIL] = of_clk_get_by_name(ccm_node, "ckil");
+ if (IS_ERR(clk[IMX6QDL_CLK_CKIL]))
+ clk[IMX6QDL_CLK_CKIL] = imx_obtain_fixed_clock("ckil", 0);
+ clk[IMX6QDL_CLK_CKIH] = of_clk_get_by_name(ccm_node, "ckih1");
+ if (IS_ERR(clk[IMX6QDL_CLK_CKIH]))
+ clk[IMX6QDL_CLK_CKIH] = imx_obtain_fixed_clock("ckih1", 0);
+ clk[IMX6QDL_CLK_OSC] = of_clk_get_by_name(ccm_node, "osc");
+ if (IS_ERR(clk[IMX6QDL_CLK_OSC]))
+ clk[IMX6QDL_CLK_OSC] = imx_obtain_fixed_clock("osc", 0);
+
/* Clock source from external clock via CLK1/2 PADs */
- clk[IMX6QDL_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
- clk[IMX6QDL_CLK_ANACLK2] = imx_obtain_fixed_clock("anaclk2", 0);
+ clk[IMX6QDL_CLK_ANACLK1] = of_clk_get_by_name(ccm_node, "anaclk1");
+ if (IS_ERR(clk[IMX6QDL_CLK_ANACLK1]))
+ clk[IMX6QDL_CLK_ANACLK1] = imx_obtain_fixed_clock("anaclk1", 0);
+
+ clk[IMX6QDL_CLK_ANACLK2] = of_clk_get_by_name(ccm_node, "anaclk2");
+ if (IS_ERR(clk[IMX6QDL_CLK_ANACLK2]))
+ clk[IMX6QDL_CLK_ANACLK2] = imx_obtain_fixed_clock("anaclk2", 0);
np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
anatop_base = base = of_iomap(np, 0);
clk[IMX6QDL_CLK_USBPHY1_GATE] = imx_clk_gate("usbphy1_gate", "dummy", base + 0x10, 6);
clk[IMX6QDL_CLK_USBPHY2_GATE] = imx_clk_gate("usbphy2_gate", "dummy", base + 0x20, 6);
- clk[IMX6QDL_CLK_SATA_REF] = imx_clk_fixed_factor("sata_ref", "pll6_enet", 1, 5);
- clk[IMX6QDL_CLK_PCIE_REF] = imx_clk_fixed_factor("pcie_ref", "pll6_enet", 1, 4);
+ /*
+ * The ENET PLL is special in that is has multiple outputs with
+ * different post-dividers that are all affected by the single bypass
+ * bit, so a single mux bit affects 3 independent branches of the clock
+ * tree. There is no good way to model this in the clock framework and
+ * dynamically changing the bypass bit, will yield unexpected results.
+ * So we treat any configuration that bypasses the ENET PLL as
+ * essentially static with the divider ratios reflecting the bypass
+ * status.
+ *
+ */
+ if (!pll6_bypassed(ccm_node)) {
+ clk[IMX6QDL_CLK_SATA_REF] = imx_clk_fixed_factor("sata_ref", "pll6_enet", 1, 5);
+ clk[IMX6QDL_CLK_PCIE_REF] = imx_clk_fixed_factor("pcie_ref", "pll6_enet", 1, 4);
+ clk[IMX6QDL_CLK_ENET_REF] = clk_register_divider_table(NULL, "enet_ref", "pll6_enet", 0,
+ base + 0xe0, 0, 2, 0, clk_enet_ref_table,
+ &imx_ccm_lock);
+ } else {
+ clk[IMX6QDL_CLK_SATA_REF] = imx_clk_fixed_factor("sata_ref", "pll6_enet", 1, 1);
+ clk[IMX6QDL_CLK_PCIE_REF] = imx_clk_fixed_factor("pcie_ref", "pll6_enet", 1, 1);
+ clk[IMX6QDL_CLK_ENET_REF] = imx_clk_fixed_factor("enet_ref", "pll6_enet", 1, 1);
+ }
clk[IMX6QDL_CLK_SATA_REF_100M] = imx_clk_gate("sata_ref_100m", "sata_ref", base + 0xe0, 20);
clk[IMX6QDL_CLK_PCIE_REF_125M] = imx_clk_gate("pcie_ref_125m", "pcie_ref", base + 0xe0, 19);
- clk[IMX6QDL_CLK_ENET_REF] = clk_register_divider_table(NULL, "enet_ref", "pll6_enet", 0,
- base + 0xe0, 0, 2, 0, clk_enet_ref_table,
- &imx_ccm_lock);
-
clk[IMX6QDL_CLK_LVDS1_SEL] = imx_clk_mux("lvds1_sel", base + 0x160, 0, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
clk[IMX6QDL_CLK_LVDS2_SEL] = imx_clk_mux("lvds2_sel", base + 0x160, 5, 5, lvds_sels, ARRAY_SIZE(lvds_sels));
* lvds1_gate and lvds2_gate are pseudo-gates. Both can be
* independently configured as clock inputs or outputs. We treat
* the "output_enable" bit as a gate, even though it's really just
- * enabling clock output.
+ * enabling clock output. Initially the gate bits are cleared, as
+ * otherwise the exclusive configuration gets locked in the setup done
+ * by software running before the clock driver, with no way to change
+ * it.
*/
+ writel(readl(base + 0x160) & ~0x3c00, base + 0x160);
clk[IMX6QDL_CLK_LVDS1_GATE] = imx_clk_gate_exclusive("lvds1_gate", "lvds1_sel", base + 0x160, 10, BIT(12));
clk[IMX6QDL_CLK_LVDS2_GATE] = imx_clk_gate_exclusive("lvds2_gate", "lvds2_sel", base + 0x160, 11, BIT(13));
clk[IMX6QDL_CLK_CAN1_SERIAL] = imx_clk_gate2("can1_serial", "can_root", base + 0x68, 16);
clk[IMX6QDL_CLK_CAN2_IPG] = imx_clk_gate2("can2_ipg", "ipg", base + 0x68, 18);
clk[IMX6QDL_CLK_CAN2_SERIAL] = imx_clk_gate2("can2_serial", "can_root", base + 0x68, 20);
+ clk[IMX6QDL_CLK_DCIC1] = imx_clk_gate2("dcic1", "ipu1_podf", base + 0x68, 24);
+ clk[IMX6QDL_CLK_DCIC2] = imx_clk_gate2("dcic2", "ipu2_podf", base + 0x68, 26);
clk[IMX6QDL_CLK_ECSPI1] = imx_clk_gate2("ecspi1", "ecspi_root", base + 0x6c, 0);
clk[IMX6QDL_CLK_ECSPI2] = imx_clk_gate2("ecspi2", "ecspi_root", base + 0x6c, 2);
clk[IMX6QDL_CLK_ECSPI3] = imx_clk_gate2("ecspi3", "ecspi_root", base + 0x6c, 4);
git.samba.org / sfrench / cifs-2.6.git / blobdiff