[RFC 04/10] clk: samsung: Remove support for Exynos5440

Krzysztof Kozlowski
2018-04-24T20:32:33Z

The Exynos5440 is not actively developed, there are no development
boards available and probably there are no real products with it.
Remove wide-tree support for Exynos5440.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
.../devicetree/bindings/clock/exynos5440-clock.txt | 28 ----
drivers/clk/samsung/Makefile | 1 -
drivers/clk/samsung/clk-exynos5440.c | 167 ---------------------
include/dt-bindings/clock/exynos5440.h | 44 ------
4 files changed, 240 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/exynos5440-clock.txt
delete mode 100644 drivers/clk/samsung/clk-exynos5440.c
delete mode 100644 include/dt-bindings/clock/exynos5440.h

diff --git a/Documentation/devicetree/bindings/clock/exynos5440-clock.txt b/Documentation/devicetree/bindings/clock/exynos5440-clock.txt
deleted file mode 100644
index c7d227c31e95..000000000000
--- a/Documentation/devicetree/bindings/clock/exynos5440-clock.txt
+++ /dev/null
@@ -1,28 +0,0 @@
-* Samsung Exynos5440 Clock Controller
-
-The Exynos5440 clock controller generates and supplies clock to various
-controllers within the Exynos5440 SoC.
-
-Required Properties:
-
-- compatible: should be "samsung,exynos5440-clock".
-
-- reg: physical base address of the controller and length of memory mapped
- region.
-
-- #clock-cells: should be 1.
-
-Each clock is assigned an identifier and client nodes can use this identifier
-to specify the clock which they consume.
-
-All available clocks are defined as preprocessor macros in
-dt-bindings/clock/exynos5440.h header and can be used in device
-tree sources.
-
-Example: An example of a clock controller node is listed below.
-
- clock: clock-controller@10010000 {
- compatible = "samsung,exynos5440-clock";
- reg = <0x160000 0x10000>;
- #clock-cells = <1>;
- };
diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile
index 513826393158..1a4e6b787978 100644
--- a/drivers/clk/samsung/Makefile
+++ b/drivers/clk/samsung/Makefile
@@ -14,7 +14,6 @@ obj-$(CONFIG_SOC_EXYNOS5410) += clk-exynos5410.o
obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5420.o
obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5-subcmu.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos5433.o
-obj-$(CONFIG_SOC_EXYNOS5440) += clk-exynos5440.o
obj-$(CONFIG_EXYNOS_AUDSS_CLK_CON) += clk-exynos-audss.o
obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-clkout.o
obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o
diff --git a/drivers/clk/samsung/clk-exynos5440.c b/drivers/clk/samsung/clk-exynos5440.c
deleted file mode 100644
index b08bd54c5e76..000000000000
--- a/drivers/clk/samsung/clk-exynos5440.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (c) 2013 Samsung Electronics Co., Ltd.
- * Author: Thomas Abraham <thomas.ab@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Common Clock Framework support for Exynos5440 SoC.
-*/
-
-#include <dt-bindings/clock/exynos5440.h>
-#include <linux/clk-provider.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-
-#include "clk.h"
-#include "clk-pll.h"
-
-#define CLKEN_OV_VAL 0xf8
-#define CPU_CLK_STATUS 0xfc
-#define MISC_DOUT1 0x558
-
-static void __iomem *reg_base;
-
-/* parent clock name list */
-PNAME(mout_armclk_p) = { "cplla", "cpllb" };
-PNAME(mout_spi_p) = { "div125", "div200" };
-
-/* fixed rate clocks generated outside the soc */
-static struct samsung_fixed_rate_clock exynos5440_fixed_rate_ext_clks[] __initdata = {
- FRATE(0, "xtal", NULL, 0, 0),
-};
-
-/* fixed rate clocks */
-static const struct samsung_fixed_rate_clock exynos5440_fixed_rate_clks[] __initconst = {
- FRATE(0, "ppll", NULL, 0, 1000000000),
- FRATE(0, "usb_phy0", NULL, 0, 60000000),
- FRATE(0, "usb_phy1", NULL, 0, 60000000),
- FRATE(0, "usb_ohci12", NULL, 0, 12000000),
- FRATE(0, "usb_ohci48", NULL, 0, 48000000),
-};
-
-/* fixed factor clocks */
-static const struct samsung_fixed_factor_clock exynos5440_fixed_factor_clks[] __initconst = {
- FFACTOR(0, "div250", "ppll", 1, 4, 0),
- FFACTOR(0, "div200", "ppll", 1, 5, 0),
- FFACTOR(0, "div125", "div250", 1, 2, 0),
-};
-
-/* mux clocks */
-static const struct samsung_mux_clock exynos5440_mux_clks[] __initconst = {
- MUX(0, "mout_spi", mout_spi_p, MISC_DOUT1, 5, 1),
- MUX(CLK_ARM_CLK, "arm_clk", mout_armclk_p, CPU_CLK_STATUS, 0, 1),
-};
-
-/* divider clocks */
-static const struct samsung_div_clock exynos5440_div_clks[] __initconst = {
- DIV(CLK_SPI_BAUD, "div_spi", "mout_spi", MISC_DOUT1, 3, 2),
-};
-
-/* gate clocks */
-static const struct samsung_gate_clock exynos5440_gate_clks[] __initconst = {
- GATE(CLK_PB0_250, "pb0_250", "div250", CLKEN_OV_VAL, 3, 0, 0),
- GATE(CLK_PR0_250, "pr0_250", "div250", CLKEN_OV_VAL, 4, 0, 0),
- GATE(CLK_PR1_250, "pr1_250", "div250", CLKEN_OV_VAL, 5, 0, 0),
- GATE(CLK_B_250, "b_250", "div250", CLKEN_OV_VAL, 9, 0, 0),
- GATE(CLK_B_125, "b_125", "div125", CLKEN_OV_VAL, 10, 0, 0),
- GATE(CLK_B_200, "b_200", "div200", CLKEN_OV_VAL, 11, 0, 0),
- GATE(CLK_SATA, "sata", "div200", CLKEN_OV_VAL, 12, 0, 0),
- GATE(CLK_USB, "usb", "div200", CLKEN_OV_VAL, 13, 0, 0),
- GATE(CLK_GMAC0, "gmac0", "div200", CLKEN_OV_VAL, 14, 0, 0),
- GATE(CLK_CS250, "cs250", "div250", CLKEN_OV_VAL, 19, 0, 0),
- GATE(CLK_PB0_250_O, "pb0_250_o", "pb0_250", CLKEN_OV_VAL, 3, 0, 0),
- GATE(CLK_PR0_250_O, "pr0_250_o", "pr0_250", CLKEN_OV_VAL, 4, 0, 0),
- GATE(CLK_PR1_250_O, "pr1_250_o", "pr1_250", CLKEN_OV_VAL, 5, 0, 0),
- GATE(CLK_B_250_O, "b_250_o", "b_250", CLKEN_OV_VAL, 9, 0, 0),
- GATE(CLK_B_125_O, "b_125_o", "b_125", CLKEN_OV_VAL, 10, 0, 0),
- GATE(CLK_B_200_O, "b_200_o", "b_200", CLKEN_OV_VAL, 11, 0, 0),
- GATE(CLK_SATA_O, "sata_o", "sata", CLKEN_OV_VAL, 12, 0, 0),
- GATE(CLK_USB_O, "usb_o", "usb", CLKEN_OV_VAL, 13, 0, 0),
- GATE(CLK_GMAC0_O, "gmac0_o", "gmac", CLKEN_OV_VAL, 14, 0, 0),
- GATE(CLK_CS250_O, "cs250_o", "cs250", CLKEN_OV_VAL, 19, 0, 0),
-};
-
-static const struct of_device_id ext_clk_match[] __initconst = {
- { .compatible = "samsung,clock-xtal", .data = (void *)0, },
- {},
-};
-
-static int exynos5440_clk_restart_notify(struct notifier_block *this,
- unsigned long code, void *unused)
-{
- u32 val, status;
-
- status = readl_relaxed(reg_base + 0xbc);
- val = readl_relaxed(reg_base + 0xcc);
- val = (val & 0xffff0000) | (status & 0xffff);
- writel_relaxed(val, reg_base + 0xcc);
-
- return NOTIFY_DONE;
-}
-
-/*
- * Exynos5440 Clock restart notifier, handles restart functionality
- */
-static struct notifier_block exynos5440_clk_restart_handler = {
- .notifier_call = exynos5440_clk_restart_notify,
- .priority = 128,
-};
-
-static const struct samsung_pll_clock exynos5440_plls[] __initconst = {
- PLL(pll_2550x, CLK_CPLLA, "cplla", "xtal", 0, 0x4c, NULL),
- PLL(pll_2550x, CLK_CPLLB, "cpllb", "xtal", 0, 0x50, NULL),
-};
-
-/*
- * Clock aliases for legacy clkdev look-up.
- */
-static const struct samsung_clock_alias exynos5440_aliases[] __initconst = {
- ALIAS(CLK_ARM_CLK, NULL, "armclk"),
-};
-
-/* register exynos5440 clocks */
-static void __init exynos5440_clk_init(struct device_node *np)
-{
- struct samsung_clk_provider *ctx;
-
- reg_base = of_iomap(np, 0);
- if (!reg_base) {
- pr_err("%s: failed to map clock controller registers,"
- " aborting clock initialization\n", __func__);
- return;
- }
-
- ctx = samsung_clk_init(np, reg_base, CLK_NR_CLKS);
-
- samsung_clk_of_register_fixed_ext(ctx, exynos5440_fixed_rate_ext_clks,
- ARRAY_SIZE(exynos5440_fixed_rate_ext_clks), ext_clk_match);
-
- samsung_clk_register_pll(ctx, exynos5440_plls,
- ARRAY_SIZE(exynos5440_plls), ctx->reg_base);
-
- samsung_clk_register_fixed_rate(ctx, exynos5440_fixed_rate_clks,
- ARRAY_SIZE(exynos5440_fixed_rate_clks));
- samsung_clk_register_fixed_factor(ctx, exynos5440_fixed_factor_clks,
- ARRAY_SIZE(exynos5440_fixed_factor_clks));
- samsung_clk_register_mux(ctx, exynos5440_mux_clks,
- ARRAY_SIZE(exynos5440_mux_clks));
- samsung_clk_register_div(ctx, exynos5440_div_clks,
- ARRAY_SIZE(exynos5440_div_clks));
- samsung_clk_register_gate(ctx, exynos5440_gate_clks,
- ARRAY_SIZE(exynos5440_gate_clks));
- samsung_clk_register_alias(ctx, exynos5440_aliases,
- ARRAY_SIZE(exynos5440_aliases));
-
- samsung_clk_of_add_provider(np, ctx);
-
- if (register_restart_handler(&exynos5440_clk_restart_handler))
- pr_warn("exynos5440 clock can't register restart handler\n");
-
- pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("arm_clk"));
- pr_info("exynos5440 clock initialization complete\n");
-}
-CLK_OF_DECLARE(exynos5440_clk, "samsung,exynos5440-clock", exynos5440_clk_init);
diff --git a/include/dt-bindings/clock/exynos5440.h b/include/dt-bindings/clock/exynos5440.h
deleted file mode 100644
index 842cdc0adff1..000000000000
--- a/include/dt-bindings/clock/exynos5440.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2013 Samsung Electronics Co., Ltd.
- * Author: Andrzej Hajda <a.hajda@samsung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Device Tree binding constants for Exynos5440 clock controller.
-*/
-
-#ifndef _DT_BINDINGS_CLOCK_EXYNOS_5440_H
-#define _DT_BINDINGS_CLOCK_EXYNOS_5440_H
-
-#define CLK_XTAL 1
-#define CLK_ARM_CLK 2
-#define CLK_CPLLA 3
-#define CLK_CPLLB 4
-#define CLK_SPI_BAUD 16
-#define CLK_PB0_250 17
-#define CLK_PR0_250 18
-#define CLK_PR1_250 19
-#define CLK_B_250 20
-#define CLK_B_125 21
-#define CLK_B_200 22
-#define CLK_SATA 23
-#define CLK_USB 24
-#define CLK_GMAC0 25
-#define CLK_CS250 26
-#define CLK_PB0_250_O 27
-#define CLK_PR0_250_O 28
-#define CLK_PR1_250_O 29
-#define CLK_B_250_O 30
-#define CLK_B_125_O 31
-#define CLK_B_200_O 32
-#define CLK_SATA_O 33
-#define CLK_USB_O 34
-#define CLK_GMAC0_O 35
-#define CLK_CS250_O 36
-
-/* must be greater than maximal clock id */
-#define CLK_NR_CLKS 37
-
-#endif /* _DT_BINDINGS_CLOCK_EXYNOS_5440_H */
--
2.14.1