[PATCH v8 13/42] clk: davinci: Add platform information for TI DM355 PSC
David Lechner
david at lechnology.com
Thu Mar 15 19:52:29 PDT 2018
This adds platform-specific declarations for the PSC clocks on TI
DM355 based systems.
Signed-off-by: David Lechner <david at lechnology.com>
---
v8 changes:
- drop use of __init and __initconst attributes
- add parent clock mappings
v7 changes:
- split registration function into two, one for each PSC
- add platform_device_id table
- don't wrap lines for readability
- add LPSC_ALWAYS_ENABLED flag to timer0 clock
v6 changes:
- change how clkdev lookups are declared
drivers/clk/davinci/Makefile | 1 +
drivers/clk/davinci/psc-dm355.c | 88 +++++++++++++++++++++++++++++++++++++++++
drivers/clk/davinci/psc.c | 1 +
drivers/clk/davinci/psc.h | 1 +
4 files changed, 91 insertions(+)
create mode 100644 drivers/clk/davinci/psc-dm355.c
diff --git a/drivers/clk/davinci/Makefile b/drivers/clk/davinci/Makefile
index aef0390..e0da5c3 100644
--- a/drivers/clk/davinci/Makefile
+++ b/drivers/clk/davinci/Makefile
@@ -12,4 +12,5 @@ obj-$(CONFIG_ARCH_DAVINCI_DM646x) += pll-dm646x.o
obj-y += psc.o
obj-$(CONFIG_ARCH_DAVINCI_DA830) += psc-da830.o
obj-$(CONFIG_ARCH_DAVINCI_DA850) += psc-da850.o
+obj-$(CONFIG_ARCH_DAVINCI_DM355) += psc-dm355.o
endif
diff --git a/drivers/clk/davinci/psc-dm355.c b/drivers/clk/davinci/psc-dm355.c
new file mode 100644
index 0000000..249a053
--- /dev/null
+++ b/drivers/clk/davinci/psc-dm355.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PSC clock descriptions for TI DaVinci DM355
+ *
+ * Copyright (C) 2018 David Lechner <david at lechnology.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+
+#include "psc.h"
+
+LPSC_CLKDEV1(vpss_master_clkdev, "master", "vpss");
+LPSC_CLKDEV1(vpss_slave_clkdev, "slave", "vpss");
+LPSC_CLKDEV1(spi1_clkdev, NULL, "spi_davinci.1");
+LPSC_CLKDEV1(mmcsd1_clkdev, NULL, "dm6441-mmc.1");
+LPSC_CLKDEV1(mcbsp1_clkdev, NULL, "davinci-mcbsp.1");
+LPSC_CLKDEV1(usb_clkdev, "usb", NULL);
+LPSC_CLKDEV1(spi2_clkdev, NULL, "spi_davinci.2");
+LPSC_CLKDEV1(aemif_clkdev, "aemif", NULL);
+LPSC_CLKDEV1(mmcsd0_clkdev, NULL, "dm6441-mmc.0");
+LPSC_CLKDEV1(mcbsp0_clkdev, NULL, "davinci-mcbsp.0");
+LPSC_CLKDEV1(i2c_clkdev, NULL, "i2c_davinci.1");
+LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
+LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
+LPSC_CLKDEV1(uart2_clkdev, NULL, "serial8250.2");
+LPSC_CLKDEV1(spi0_clkdev, NULL, "spi_davinci.0");
+/* REVISIT: gpio-davinci.c should be modified to drop con_id */
+LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
+LPSC_CLKDEV1(timer0_clkdev, "timer0", NULL);
+LPSC_CLKDEV1(timer2_clkdev, NULL, "davinci-wdt");
+LPSC_CLKDEV1(vpss_dac_clkdev, "vpss_dac", NULL);
+
+static const struct davinci_lpsc_clk_info dm355_psc_info[] = {
+ LPSC(0, 0, vpss_master, pll1_sysclk4, vpss_master_clkdev, 0),
+ LPSC(1, 0, vpss_slave, pll1_sysclk4, vpss_slave_clkdev, 0),
+ LPSC(5, 0, timer3, pll1_auxclk, NULL, 0),
+ LPSC(6, 0, spi1, pll1_sysclk2, spi1_clkdev, 0),
+ LPSC(7, 0, mmcsd1, pll1_sysclk2, mmcsd1_clkdev, 0),
+ LPSC(8, 0, asp1, pll1_sysclk2, NULL, 0),
+ LPSC(9, 0, usb, pll1_sysclk2, usb_clkdev, 0),
+ LPSC(10, 0, pwm3, pll1_auxclk, NULL, 0),
+ LPSC(11, 0, spi2, pll1_sysclk2, spi2_clkdev, 0),
+ LPSC(12, 0, rto, pll1_auxclk, NULL, 0),
+ LPSC(14, 0, aemif, pll1_sysclk2, aemif_clkdev, 0),
+ LPSC(15, 0, mmcsd0, pll1_sysclk2, mmcsd0_clkdev, 0),
+ LPSC(17, 0, asp0, pll1_sysclk2, NULL, 0),
+ LPSC(18, 0, i2c, pll1_auxclk, i2c_clkdev, 0),
+ LPSC(19, 0, uart0, pll1_auxclk, uart0_clkdev, 0),
+ LPSC(20, 0, uart1, pll1_auxclk, uart1_clkdev, 0),
+ LPSC(21, 0, uart2, pll1_sysclk2, uart2_clkdev, 0),
+ LPSC(22, 0, spi0, pll1_sysclk2, spi0_clkdev, 0),
+ LPSC(23, 0, pwm0, pll1_auxclk, NULL, 0),
+ LPSC(24, 0, pwm1, pll1_auxclk, NULL, 0),
+ LPSC(25, 0, pwm2, pll1_auxclk, NULL, 0),
+ LPSC(26, 0, gpio, pll1_sysclk2, gpio_clkdev, 0),
+ LPSC(27, 0, timer0, pll1_auxclk, timer0_clkdev, LPSC_ALWAYS_ENABLED),
+ LPSC(28, 0, timer1, pll1_auxclk, NULL, 0),
+ /* REVISIT: why can't this be disabled? */
+ LPSC(29, 0, timer2, pll1_auxclk, timer2_clkdev, LPSC_ALWAYS_ENABLED),
+ LPSC(31, 0, arm, pll1_sysclk1, NULL, LPSC_ALWAYS_ENABLED),
+ LPSC(40, 0, mjcp, pll1_sysclk1, NULL, 0),
+ LPSC(41, 0, vpss_dac, pll1_sysclk3, vpss_dac_clkdev, 0),
+ { }
+};
+
+static int dm355_psc_init(struct device *dev, void __iomem *base)
+{
+ return davinci_psc_register_clocks(base, dm355_psc_info, 42, base);
+}
+
+static struct clk_bulk_data dm355_psc_parent_clks[] = {
+ { .id = "pll1_sysclk1" },
+ { .id = "pll1_sysclk2" },
+ { .id = "pll1_sysclk3" },
+ { .id = "pll1_sysclk4" },
+ { .id = "pll1_auxclk" },
+};
+
+const struct davinci_psc_init_data dm355_psc_init_data = {
+ .parent_clks = dm355_psc_parent_clks,
+ .num_parent_clks = ARRAY_SIZE(dm355_psc_parent_clks),
+ .psc_init = &dm355_psc_init,
+};
diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c
index fa39536..0825b62 100644
--- a/drivers/clk/davinci/psc.c
+++ b/drivers/clk/davinci/psc.c
@@ -492,6 +492,7 @@ static const struct platform_device_id davinci_psc_id_table[] = {
{ .name = "da830-psc1", .driver_data = (kernel_ulong_t)&da830_psc1_init_data },
{ .name = "da850-psc0", .driver_data = (kernel_ulong_t)&da850_psc0_init_data },
{ .name = "da850-psc1", .driver_data = (kernel_ulong_t)&da850_psc1_init_data },
+ { .name = "dm355-psc", .driver_data = (kernel_ulong_t)&dm355_psc_init_data },
{ }
};
diff --git a/drivers/clk/davinci/psc.h b/drivers/clk/davinci/psc.h
index 476bd74..d672e72 100644
--- a/drivers/clk/davinci/psc.h
+++ b/drivers/clk/davinci/psc.h
@@ -100,5 +100,6 @@ extern const struct davinci_psc_init_data da850_psc0_init_data;
extern const struct davinci_psc_init_data da850_psc1_init_data;
extern const struct davinci_psc_init_data of_da850_psc0_init_data;
extern const struct davinci_psc_init_data of_da850_psc1_init_data;
+extern const struct davinci_psc_init_data dm355_psc_init_data;
#endif /* __CLK_DAVINCI_PSC_H__ */
--
2.7.4
More information about the linux-arm-kernel
mailing list