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Message-Id: <1516468460-4908-7-git-send-email-david@lechnology.com>
Date: Sat, 20 Jan 2018 11:13:45 -0600
From: David Lechner <david@...hnology.com>
To: linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Cc: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Sekhar Nori <nsekhar@...com>,
Kevin Hilman <khilman@...nel.org>,
Bartosz Golaszewski <bgolaszewski@...libre.com>,
Adam Ford <aford173@...il.com>, linux-kernel@...r.kernel.org,
David Lechner <david@...hnology.com>
Subject: [PATCH v6 06/41] clk: davinci: Add platform information for TI DM365 PLL
This adds platform-specific declarations for the PLL clocks on TI
DM365 based systems.
Signed-off-by: David Lechner <david@...hnology.com>
---
v6 changes:
- Added dm365_pll{1,2}_info with controller-specific information
- Changed OBSCLK data
- Add empty lines between function calls
drivers/clk/davinci/Makefile | 1 +
drivers/clk/davinci/pll-dm365.c | 110 ++++++++++++++++++++++++++++++++++++++++
include/linux/clk/davinci.h | 1 +
3 files changed, 112 insertions(+)
create mode 100644 drivers/clk/davinci/pll-dm365.c
diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
index 6720bd0..353aa02 100644
--- a/drivers/clk/davinci/Makefile
+++ b/drivers/clk/davinci/Makefile
@@ -5,4 +5,5 @@ obj-y += pll.o
obj-$(CONFIG_ARCH_DAVINCI_DA830) += pll-da830.o
obj-$(CONFIG_ARCH_DAVINCI_DA850) += pll-da850.o
obj-$(CONFIG_ARCH_DAVINCI_DM355) += pll-dm355.o
+obj-$(CONFIG_ARCH_DAVINCI_DM365) += pll-dm365.o
endif
diff --git a/drivers/clk/davinci/pll-dm365.c b/drivers/clk/davinci/pll-dm365.c
new file mode 100644
index 0000000..1be7785
--- /dev/null
+++ b/drivers/clk/davinci/pll-dm365.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PLL clock descriptions for TI DM365
+ *
+ * Copyright (C) 2018 David Lechner <david@...hnology.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include "pll.h"
+
+#define OCSEL_OCSRC_ENABLE 0
+
+static const struct davinci_pll_clk_info dm365_pll1_info __initconst = {
+ .name = "pll1",
+ .pllm_mask = GENMASK(9, 0),
+ .pllm_min = 1,
+ .pllm_max = 1023,
+ .flags = PLL_HAS_OSCIN | PLL_HAS_PREDIV | PLL_HAS_POSTDIV |
+ PLL_POSTDIV_ALWAYS_ENABLED | PLL_PLLM_2X,
+};
+
+static const struct davinci_pll_sysclk_info dm365_pll1_sysclk_info[] __initconst = {
+ SYSCLK(1, pll1_sysclk1, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(2, pll1_sysclk2, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(3, pll1_sysclk3, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(4, pll1_sysclk4, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(5, pll1_sysclk5, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(6, pll1_sysclk6, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(7, pll1_sysclk7, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(8, pll1_sysclk8, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(9, pll1_sysclk9, pll1_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ { }
+};
+
+/*
+ * This is a bit of a hack to make OCSEL[OCSRC] on DM365 look like OCSEL[OCSRC]
+ * on DA850. On DM365, OCSEL[OCSRC] is just an enable/disable bit instead of a
+ * multiplexer. By modeling it as a single parent mux clock, the clock code will
+ * still do the right thing in this case.
+ */
+static const char * const dm365_pll_obsclk_parent_names[] __initconst = {
+ "oscin",
+};
+
+static u32 dm365_pll_obsclk_table[] = {
+ OCSEL_OCSRC_ENABLE,
+};
+
+static const struct davinci_pll_obsclk_info dm365_pll1_obsclk_info __initconst = {
+ .name = "pll1_obsclk",
+ .parent_names = dm365_pll_obsclk_parent_names,
+ .num_parents = ARRAY_SIZE(dm365_pll_obsclk_parent_names),
+ .table = dm365_pll_obsclk_table,
+ .ocsrc_mask = BIT(4),
+};
+
+static const struct davinci_pll_clk_info dm365_pll2_info __initconst = {
+ .name = "pll2",
+ .pllm_mask = GENMASK(9, 0),
+ .pllm_min = 1,
+ .pllm_max = 1023,
+ .flags = PLL_HAS_PREDIV | PLL_HAS_POSTDIV | PLL_POSTDIV_ALWAYS_ENABLED |
+ PLL_PLLM_2X,
+};
+
+static const struct davinci_pll_sysclk_info dm365_pll2_sysclk_info[] __initconst = {
+ SYSCLK(1, pll2_sysclk1, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(2, pll2_sysclk2, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(3, pll2_sysclk3, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(4, pll2_sysclk4, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ SYSCLK(5, pll2_sysclk5, pll2_pllen, 5, SYSCLK_ALWAYS_ENABLED),
+ { }
+};
+
+static const struct davinci_pll_obsclk_info dm365_pll2_obsclk_info __initconst = {
+ .name = "pll2_obsclk",
+ .parent_names = dm365_pll_obsclk_parent_names,
+ .num_parents = ARRAY_SIZE(dm365_pll_obsclk_parent_names),
+ .table = dm365_pll_obsclk_table,
+ .ocsrc_mask = BIT(4),
+};
+
+void __init dm365_pll_clk_init(void __iomem *pll1, void __iomem *pll2)
+{
+ const struct davinci_pll_sysclk_info *info;
+
+ davinci_pll_clk_register(&dm365_pll1_info, "ref_clk", pll1);
+
+ davinci_pll_auxclk_register("pll1_auxclk", pll1);
+
+ davinci_pll_sysclkbp_clk_register("pll1_sysclkbp", pll1);
+
+ davinci_pll_obsclk_register(&dm365_pll1_obsclk_info, pll1);
+
+ for (info = dm365_pll1_sysclk_info; info->name; info++)
+ davinci_pll_sysclk_register(info, pll1);
+
+ davinci_pll_clk_register(&dm365_pll2_info, "oscin", pll2);
+
+ davinci_pll_auxclk_register("pll2_auxclk", pll2);
+
+ davinci_pll_obsclk_register(&dm365_pll2_obsclk_info, pll2);
+
+ for (info = dm365_pll2_sysclk_info; info->name; info++)
+ davinci_pll_sysclk_register(info, pll2);
+}
diff --git a/include/linux/clk/davinci.h b/include/linux/clk/davinci.h
index 95333fe..5bf60a7 100644
--- a/include/linux/clk/davinci.h
+++ b/include/linux/clk/davinci.h
@@ -12,5 +12,6 @@
void da830_pll_clk_init(void __iomem *pll);
void da850_pll_clk_init(void __iomem *pll0, void __iomem *pll1);
void dm355_pll_clk_init(void __iomem *pll1, void __iomem *pll2);
+void dm365_pll_clk_init(void __iomem *pll1, void __iomem *pll2);
#endif /* __LINUX_CLK_DAVINCI_H__ */
--
2.7.4
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