This is a mixture of the Armada 370 barebox driver and the Armada 38x Linux
driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
drivers/clk/mvebu/Makefile | 1 +
drivers/clk/mvebu/armada-38x.c | 144 +++++++++++++++++++++++++++++++++++++++++
drivers/clk/mvebu/common.c | 4 ++
drivers/clk/mvebu/common.h | 8 +++
4 files changed, 157 insertions(+)
create mode 100644 drivers/clk/mvebu/armada-38x.c
diff --git a/drivers/clk/mvebu/Makefile b/drivers/clk/mvebu/Makefile
index 4b2c3c84311b..53c759e4ef17 100644
--- a/drivers/clk/mvebu/Makefile
+++ b/drivers/clk/mvebu/Makefile
@@ -1,5 +1,6 @@
obj-y += common.o
obj-$(CONFIG_ARCH_ARMADA_370) += armada-370.o corediv.o
obj-$(CONFIG_ARCH_ARMADA_XP) += armada-xp.o corediv.o
+obj-$(CONFIG_ARCH_ARMADA_38X) += armada-38x.o corediv.o
obj-$(CONFIG_ARCH_DOVE) += dove.o
obj-$(CONFIG_ARCH_KIRKWOOD) += kirkwood.o
diff --git a/drivers/clk/mvebu/armada-38x.c b/drivers/clk/mvebu/armada-38x.c
new file mode 100644
index 000000000000..d2d7c2a22576
--- /dev/null
+++ b/drivers/clk/mvebu/armada-38x.c
@@ -0,0 +1,144 @@
+/*
+ * Marvell Armada 380/385 SoC clocks
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
+ * Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
+ * Andrew Lunn <andrew@xxxxxxx>
+ *
+ * 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 <common.h>
+#include <io.h>
+
+#include "common.h"
+
+/*
+ * Core Clocks
+ *
+ * Armada XP Sample At Reset is a 64 bit bitfiled split in two
+ * register of 32 bits
+ */
+
+#define SAR_A380_TCLK_FREQ_OPT 15
+#define SAR_A380_TCLK_FREQ_OPT_MASK 0x1
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT 10
+#define SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK 0x1f
+
+/* Armada XP TCLK frequency is fixed to 250MHz */
+static u32 a38x_get_tclk_freq(void __iomem *sar)
+{
+ if ((readl(sar) >> SAR_A380_TCLK_FREQ_OPT) & SAR_A380_TCLK_FREQ_OPT_MASK)
+ return 200000000;
+ else
+ return 250000000;
+}
+
+static const u32 a38x_cpu_freqs[] = {
+ 0, 0, 0, 0,
+ 1666000000, 0, 0, 0,
+ 1332000000, 0, 0, 0,
+ 1600000000,
+};
+
+static u32 a38x_get_cpu_freq(void __iomem *sar)
+{
+ u32 cpu_freq_select = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ if (cpu_freq_select >= ARRAY_SIZE(a38x_cpu_freqs)) {
+ pr_err("CPU freq select unsupported: %d\n", cpu_freq_select);
+ return 0;
+ }
+
+ return a38x_cpu_freqs[cpu_freq_select];
+}
+
+enum { A380_CPU_TO_DDR, A380_CPU_TO_L2 };
+
+static const struct coreclk_ratio a38x_coreclk_ratios[] = {
+ { .id = A380_CPU_TO_L2, .name = "l2clk" },
+ { .id = A380_CPU_TO_DDR, .name = "ddrclk" },
+};
+
+static const int armada_38x_cpu_l2_ratios[32][2] = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static const int armada_38x_cpu_ddr_ratios[32][2] = {
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {1, 2}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+ {0, 1}, {0, 1}, {0, 1}, {0, 1},
+};
+
+static void a38x_get_clk_ratio(
+ void __iomem *sar, int id, int *mult, int *div)
+{
+ u32 opt = ((readl(sar) >> SAR_A380_CPU_DDR_L2_FREQ_OPT) &
+ SAR_A380_CPU_DDR_L2_FREQ_OPT_MASK);
+
+ switch (id) {
+ case A380_CPU_TO_L2:
+ *mult = armada_38x_cpu_l2_ratios[opt][0];
+ *div = armada_38x_cpu_l2_ratios[opt][1];
+ break;
+ case A380_CPU_TO_DDR:
+ *mult = armada_38x_cpu_ddr_ratios[opt][0];
+ *div = armada_38x_cpu_ddr_ratios[opt][1];
+ break;
+ }
+}
+
+const struct coreclk_soc_desc armada_38x_coreclks = {
+ .get_tclk_freq = a38x_get_tclk_freq,
+ .get_cpu_freq = a38x_get_cpu_freq,
+ .get_clk_ratio = a38x_get_clk_ratio,
+ .ratios = a38x_coreclk_ratios,
+ .num_ratios = ARRAY_SIZE(a38x_coreclk_ratios),
+};
+
+/*
+ * Clock Gating Control
+ */
+const struct clk_gating_soc_desc armada_38x_gating_desc[] = {
+ { "audio", NULL, 0 },
+ { "ge2", NULL, 2 },
+ { "ge1", NULL, 3 },
+ { "ge0", NULL, 4 },
+ { "pex1", NULL, 5 },
+ { "pex2", NULL, 6 },
+ { "pex3", NULL, 7 },
+ { "pex0", NULL, 8 },
+ { "usb3h0", NULL, 9 },
+ { "usb3h1", NULL, 10 },
+ { "usb3d", NULL, 11 },
+ { "bm", NULL, 13 },
+ { "crypto0z", NULL, 14 },
+ { "sata0", NULL, 15 },
+ { "crypto1z", NULL, 16 },
+ { "sdio", NULL, 17 },
+ { "usb2", NULL, 18 },
+ { "crypto1", NULL, 21 },
+ { "xor0", NULL, 22 },
+ { "crypto0", NULL, 23 },
+ { "tdm", NULL, 25 },
+ { "xor1", NULL, 28 },
+ { "sata1", NULL, 30 },
+ { }
+};
diff --git a/drivers/clk/mvebu/common.c b/drivers/clk/mvebu/common.c
index a06b29f4e702..f6f118f0db1b 100644
--- a/drivers/clk/mvebu/common.c
+++ b/drivers/clk/mvebu/common.c
@@ -29,6 +29,8 @@ static struct clk_onecell_data clk_data;
static struct of_device_id mvebu_coreclk_ids[] = {
{ .compatible = "marvell,armada-370-core-clock",
.data = &armada_370_coreclks },
+ { .compatible = "marvell,armada-380-core-clock",
+ .data = &armada_38x_coreclks },
{ .compatible = "marvell,armada-xp-core-clock",
.data = &armada_xp_coreclks },
{ .compatible = "marvell,dove-core-clock",
@@ -144,6 +146,8 @@ static struct of_device_id mvebu_clk_gating_ids[] = {
.data = &armada_370_gating_desc },
{ .compatible = "marvell,armada-xp-gating-clock",
.data = &armada_xp_gating_desc },
+ { .compatible = "marvell,armada-380-gating-clock",
+ .data = &armada_38x_gating_desc },
{ .compatible = "marvell,dove-gating-clock",
.data = &dove_gating_desc },
{ .compatible = "marvell,kirkwood-gating-clock",
diff --git a/drivers/clk/mvebu/common.h b/drivers/clk/mvebu/common.h
index 522ccdeccdc4..a3b27247f79e 100644
--- a/drivers/clk/mvebu/common.h
+++ b/drivers/clk/mvebu/common.h
@@ -49,6 +49,14 @@ static const u32 armada_xp_coreclks;
static const u32 armada_xp_gating_desc;
#endif
+#ifdef CONFIG_ARCH_ARMADA_38X
+extern const struct coreclk_soc_desc armada_38x_coreclks;
+extern const struct clk_gating_soc_desc armada_38x_gating_desc[];
+#else
+static const u32 armada_38x_coreclks;
+static const u32 armada_38x_gating_desc;
+#endif
+
#ifdef CONFIG_ARCH_DOVE
extern const struct coreclk_soc_desc dove_coreclks;
extern const struct clk_gating_soc_desc dove_gating_desc[];
--
2.11.0
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