[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/clk/mvebu/armada-37xx-xtal.c b/src/kernel/linux/v4.19/drivers/clk/mvebu/armada-37xx-xtal.c
new file mode 100644
index 0000000..612d65e
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/clk/mvebu/armada-37xx-xtal.c
@@ -0,0 +1,91 @@
+/*
+ * Marvell Armada 37xx SoC xtal clocks
+ *
+ * Copyright (C) 2016 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define NB_GPIO1_LATCH 0xC
+#define XTAL_MODE BIT(31)
+
+static int armada_3700_xtal_clock_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ const char *xtal_name = "xtal";
+ struct device_node *parent;
+ struct regmap *regmap;
+ struct clk_hw *xtal_hw;
+ unsigned int rate;
+ u32 reg;
+ int ret;
+
+ xtal_hw = devm_kzalloc(&pdev->dev, sizeof(*xtal_hw), GFP_KERNEL);
+ if (!xtal_hw)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, xtal_hw);
+
+ parent = np->parent;
+ if (!parent) {
+ dev_err(&pdev->dev, "no parent\n");
+ return -ENODEV;
+ }
+
+ regmap = syscon_node_to_regmap(parent);
+ if (IS_ERR(regmap)) {
+ dev_err(&pdev->dev, "cannot get regmap\n");
+ return PTR_ERR(regmap);
+ }
+
+ ret = regmap_read(regmap, NB_GPIO1_LATCH, ®);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot read from regmap\n");
+ return ret;
+ }
+
+ if (reg & XTAL_MODE)
+ rate = 40000000;
+ else
+ rate = 25000000;
+
+ of_property_read_string_index(np, "clock-output-names", 0, &xtal_name);
+ xtal_hw = clk_hw_register_fixed_rate(NULL, xtal_name, NULL, 0, rate);
+ if (IS_ERR(xtal_hw))
+ return PTR_ERR(xtal_hw);
+ ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, xtal_hw);
+
+ return ret;
+}
+
+static int armada_3700_xtal_clock_remove(struct platform_device *pdev)
+{
+ of_clk_del_provider(pdev->dev.of_node);
+
+ return 0;
+}
+
+static const struct of_device_id armada_3700_xtal_clock_of_match[] = {
+ { .compatible = "marvell,armada-3700-xtal-clock", },
+ { }
+};
+
+static struct platform_driver armada_3700_xtal_clock_driver = {
+ .probe = armada_3700_xtal_clock_probe,
+ .remove = armada_3700_xtal_clock_remove,
+ .driver = {
+ .name = "marvell-armada-3700-xtal-clock",
+ .of_match_table = armada_3700_xtal_clock_of_match,
+ },
+};
+
+builtin_platform_driver(armada_3700_xtal_clock_driver);