Add CMU_CORE clock which represents Core BUS clocks. The source clocks
of this CMU block are oscclk or dout_clkcmu_core_bus. Thus, two source
clocks should be provided via device tree. All the gate clocks are
defined as CLK_IS_CRITICAL because they control(gate/ungate) core bus
clocks but not been assigned to any drivers.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Chanho Park <chanho61.park@xxxxxxxxxxx>
---
drivers/clk/samsung/clk-exynosautov9.c | 92 ++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/drivers/clk/samsung/clk-exynosautov9.c b/drivers/clk/samsung/clk-exynosautov9.c
index 96c6c9dbc995..984ecba83e42 100644
--- a/drivers/clk/samsung/clk-exynosautov9.c
+++ b/drivers/clk/samsung/clk-exynosautov9.c
@@ -956,3 +956,95 @@ static void __init exynosautov9_cmu_top_init(struct device_node *np)
/* Register CMU_TOP early, as it's a dependency for other early domains */
CLK_OF_DECLARE(exynosautov9_cmu_top, "samsung,exynosautov9-cmu-top",
exynosautov9_cmu_top_init);
+
+/* ---- CMU_CORE ----------------------------------------------------------- */
+
+/* Register Offset definitions for CMU_CORE (0x1b030000) */
+#define PLL_CON0_MUX_CLKCMU_CORE_BUS_USER 0x0600
+#define CLK_CON_MUX_MUX_CORE_CMUREF 0x1000
+#define CLK_CON_DIV_DIV_CLK_CORE_BUSP 0x1800
+#define CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK 0x2000
+#define CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK 0x2004
+#define CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK 0x2008
+
+static const unsigned long core_clk_regs[] __initconst = {
+ PLL_CON0_MUX_CLKCMU_CORE_BUS_USER,
+ CLK_CON_MUX_MUX_CORE_CMUREF,
+ CLK_CON_DIV_DIV_CLK_CORE_BUSP,
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK,
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK,
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK,
+};
+
+/* List of parent clocks for Muxes in CMU_CORE */
+PNAME(mout_core_bus_user_p) = { "oscclk", "dout_clkcmu_core_bus" };
+
+static const struct samsung_mux_clock core_mux_clks[] __initconst = {
+ MUX(CLK_MOUT_CORE_BUS_USER, "mout_core_bus_user", mout_core_bus_user_p,
+ PLL_CON0_MUX_CLKCMU_CORE_BUS_USER, 4, 1),
+};
+
+static const struct samsung_div_clock core_div_clks[] __initconst = {
+ DIV(CLK_DOUT_CORE_BUSP, "dout_core_busp", "mout_core_bus_user",
+ CLK_CON_DIV_DIV_CLK_CORE_BUSP, 0, 3),
+};
+
+static const struct samsung_gate_clock core_gate_clks[] __initconst = {
+ GATE(CLK_GOUT_CORE_CCI_CLK, "gout_core_cci_clk", "mout_core_bus_user",
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK, 21,
+ CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_CORE_CCI_PCLK, "gout_core_cci_pclk", "dout_core_busp",
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK, 21,
+ CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_CORE_CMU_CORE_PCLK, "gout_core_cmu_core_pclk",
+ "dout_core_busp",
+ CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK, 21,
+ CLK_IS_CRITICAL, 0),
+};
+
+static const struct samsung_cmu_info core_cmu_info __initconst = {
+ .mux_clks = core_mux_clks,
+ .nr_mux_clks = ARRAY_SIZE(core_mux_clks),
+ .div_clks = core_div_clks,
+ .nr_div_clks = ARRAY_SIZE(core_div_clks),
+ .gate_clks = core_gate_clks,
+ .nr_gate_clks = ARRAY_SIZE(core_gate_clks),
+ .nr_clk_ids = CORE_NR_CLK,
+ .clk_regs = core_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(core_clk_regs),
+ .clk_name = "dout_clkcmu_core_bus",
+};
+
+static int __init exynosautov9_cmu_probe(struct platform_device *pdev)
+{
+ const struct samsung_cmu_info *info;
+ struct device *dev = &pdev->dev;
+
+ info = of_device_get_match_data(dev);
+ exynos_arm64_register_cmu(dev, dev->of_node, info);
+
+ return 0;
+}
+
+static const struct of_device_id exynosautov9_cmu_of_match[] = {
+ {
+ .compatible = "samsung,exynosautov9-cmu-core",
+ .data = &core_cmu_info,
+ }, {
+ },
+};
+
+static struct platform_driver exynosautov9_cmu_driver __refdata = {
+ .driver = {
+ .name = "exynosautov9-cmu",
+ .of_match_table = exynosautov9_cmu_of_match,
+ .suppress_bind_attrs = true,
+ },
+ .probe = exynosautov9_cmu_probe,
+};
+
+static int __init exynosautov9_cmu_init(void)
+{
+ return platform_driver_register(&exynosautov9_cmu_driver);
+}
+core_initcall(exynosautov9_cmu_init);
--
2.36.0
