[PATCH v1 0/7] Remove ARM platform efm32

STALE2062d

Revision v1 of 2 in this series.

2 messages, 1 author, 2021-01-14 · open the first message on its own page

[PATCH v1 0/7] Remove ARM platform efm32

From: Uwe Kleine-König <hidden>
Date: 2021-01-14 15:18:08 

From: Uwe Kleine-König <redacted>

Hello,

there are no known active users of the efm32 platform. Given that the
only machine that is supported has only 4 MiB of RAM its use is also
quite limited.

Back then it served as the platform to develop ARMv7-M support in Linux
which was quite fun and still is a blissful memory.

Still given that the code serves no purpose and this probably won't
change anytime soon, remove all platform support.

I'm unsure what to do with the device tree bindings. Should we delete
them, too?

Best regards
Uwe

Uwe Kleine-König (7):
  ARM: drop efm32 platform
  clk: Drop unused efm32gg driver
  clocksource: Drop unused efm32 timer code
  spi: Drop unused efm32 bus driver
  i2c: Drop unused efm32 bus driver
  tty: Drop unused efm32 serial driver
  MAINTAINERS: Remove deleted platform efm32

 MAINTAINERS                              |   7 -
 arch/arm/Kconfig                         |  10 +-
 arch/arm/Kconfig.debug                   |  17 -
 arch/arm/Makefile                        |   1 -
 arch/arm/boot/dts/Makefile               |   2 -
 arch/arm/boot/dts/efm32gg-dk3750.dts     |  88 ---
 arch/arm/boot/dts/efm32gg.dtsi           | 177 -----
 arch/arm/configs/efm32_defconfig         |  98 ---
 arch/arm/include/debug/efm32.S           |  45 --
 arch/arm/mach-efm32/Makefile             |   2 -
 arch/arm/mach-efm32/Makefile.boot        |   4 -
 arch/arm/mach-efm32/dtmachine.c          |  16 -
 arch/arm/mm/Kconfig                      |   1 -
 drivers/clk/Makefile                     |   1 -
 drivers/clk/clk-efm32gg.c                |  84 ---
 drivers/clocksource/Kconfig              |   9 -
 drivers/clocksource/Makefile             |   1 -
 drivers/clocksource/timer-efm32.c        | 278 --------
 drivers/i2c/busses/Kconfig               |   7 -
 drivers/i2c/busses/Makefile              |   1 -
 drivers/i2c/busses/i2c-efm32.c           | 469 -------------
 drivers/spi/Kconfig                      |   7 -
 drivers/spi/Makefile                     |   1 -
 drivers/spi/spi-efm32.c                  | 462 ------------
 drivers/tty/serial/Kconfig               |  13 -
 drivers/tty/serial/Makefile              |   1 -
 drivers/tty/serial/efm32-uart.c          | 852 -----------------------
 include/linux/platform_data/efm32-spi.h  |  15 -
 include/linux/platform_data/efm32-uart.h |  19 -
 include/uapi/linux/serial_core.h         |   3 -
 30 files changed, 1 insertion(+), 2690 deletions(-)
 delete mode 100644 arch/arm/boot/dts/efm32gg-dk3750.dts
 delete mode 100644 arch/arm/boot/dts/efm32gg.dtsi
 delete mode 100644 arch/arm/configs/efm32_defconfig
 delete mode 100644 arch/arm/include/debug/efm32.S
 delete mode 100644 arch/arm/mach-efm32/Makefile
 delete mode 100644 arch/arm/mach-efm32/Makefile.boot
 delete mode 100644 arch/arm/mach-efm32/dtmachine.c
 delete mode 100644 drivers/clk/clk-efm32gg.c
 delete mode 100644 drivers/clocksource/timer-efm32.c
 delete mode 100644 drivers/i2c/busses/i2c-efm32.c
 delete mode 100644 drivers/spi/spi-efm32.c
 delete mode 100644 drivers/tty/serial/efm32-uart.c
 delete mode 100644 include/linux/platform_data/efm32-spi.h
 delete mode 100644 include/linux/platform_data/efm32-uart.h


base-commit: 5c8fe583cce542aa0b84adc939ce85293de36e5e
-- 
2.29.2

[PATCH v1 2/7] clk: Drop unused efm32gg driver

From: Uwe Kleine-König <hidden>
Date: 2021-01-14 15:17:36 

Support for this machine was just removed, so drop the now unused clk
driver, too.

Signed-off-by: Uwe Kleine-König <redacted>
---
 drivers/clk/Makefile      |  1 -
 drivers/clk/clk-efm32gg.c | 84 ---------------------------------------
 2 files changed, 85 deletions(-)
 delete mode 100644 drivers/clk/clk-efm32gg.c

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index dbdc590e7de3..a1197d753d82 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_COMMON_CLK_CDCE706)	+= clk-cdce706.o
 obj-$(CONFIG_COMMON_CLK_CDCE925)	+= clk-cdce925.o
 obj-$(CONFIG_ARCH_CLPS711X)		+= clk-clps711x.o
 obj-$(CONFIG_COMMON_CLK_CS2000_CP)	+= clk-cs2000-cp.o
-obj-$(CONFIG_ARCH_EFM32)		+= clk-efm32gg.o
 obj-$(CONFIG_ARCH_SPARX5)		+= clk-sparx5.o
 obj-$(CONFIG_COMMON_CLK_FIXED_MMIO)	+= clk-fixed-mmio.o
 obj-$(CONFIG_COMMON_CLK_FSL_FLEXSPI)	+= clk-fsl-flexspi.o
diff --git a/drivers/clk/clk-efm32gg.c b/drivers/clk/clk-efm32gg.c
deleted file mode 100644
index 85beaacb4088..000000000000
--- a/drivers/clk/clk-efm32gg.c
+++ /dev/null
@@ -1,84 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- */
-#include <linux/io.h>
-#include <linux/clk-provider.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-
-#include <dt-bindings/clock/efm32-cmu.h>
-
-#define CMU_HFPERCLKEN0		0x44
-#define CMU_MAX_CLKS		37
-
-static struct clk_hw_onecell_data *clk_data;
-
-static void __init efm32gg_cmu_init(struct device_node *np)
-{
-	int i;
-	void __iomem *base;
-	struct clk_hw **hws;
-
-	clk_data = kzalloc(struct_size(clk_data, hws, CMU_MAX_CLKS),
-			   GFP_KERNEL);
-
-	if (!clk_data)
-		return;
-
-	hws = clk_data->hws;
-
-	for (i = 0; i < CMU_MAX_CLKS; ++i)
-		hws[i] = ERR_PTR(-ENOENT);
-
-	base = of_iomap(np, 0);
-	if (!base) {
-		pr_warn("Failed to map address range for efm32gg,cmu node\n");
-		return;
-	}
-
-	hws[clk_HFXO] = clk_hw_register_fixed_rate(NULL, "HFXO", NULL, 0,
-						   48000000);
-
-	hws[clk_HFPERCLKUSART0] = clk_hw_register_gate(NULL, "HFPERCLK.USART0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 0, 0, NULL);
-	hws[clk_HFPERCLKUSART1] = clk_hw_register_gate(NULL, "HFPERCLK.USART1",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 1, 0, NULL);
-	hws[clk_HFPERCLKUSART2] = clk_hw_register_gate(NULL, "HFPERCLK.USART2",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 2, 0, NULL);
-	hws[clk_HFPERCLKUART0] = clk_hw_register_gate(NULL, "HFPERCLK.UART0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 3, 0, NULL);
-	hws[clk_HFPERCLKUART1] = clk_hw_register_gate(NULL, "HFPERCLK.UART1",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 4, 0, NULL);
-	hws[clk_HFPERCLKTIMER0] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 5, 0, NULL);
-	hws[clk_HFPERCLKTIMER1] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER1",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 6, 0, NULL);
-	hws[clk_HFPERCLKTIMER2] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER2",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 7, 0, NULL);
-	hws[clk_HFPERCLKTIMER3] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER3",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 8, 0, NULL);
-	hws[clk_HFPERCLKACMP0] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 9, 0, NULL);
-	hws[clk_HFPERCLKACMP1] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP1",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 10, 0, NULL);
-	hws[clk_HFPERCLKI2C0] = clk_hw_register_gate(NULL, "HFPERCLK.I2C0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 11, 0, NULL);
-	hws[clk_HFPERCLKI2C1] = clk_hw_register_gate(NULL, "HFPERCLK.I2C1",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 12, 0, NULL);
-	hws[clk_HFPERCLKGPIO] = clk_hw_register_gate(NULL, "HFPERCLK.GPIO",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 13, 0, NULL);
-	hws[clk_HFPERCLKVCMP] = clk_hw_register_gate(NULL, "HFPERCLK.VCMP",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 14, 0, NULL);
-	hws[clk_HFPERCLKPRS] = clk_hw_register_gate(NULL, "HFPERCLK.PRS",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 15, 0, NULL);
-	hws[clk_HFPERCLKADC0] = clk_hw_register_gate(NULL, "HFPERCLK.ADC0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 16, 0, NULL);
-	hws[clk_HFPERCLKDAC0] = clk_hw_register_gate(NULL, "HFPERCLK.DAC0",
-			"HFXO", 0, base + CMU_HFPERCLKEN0, 17, 0, NULL);
-
-	of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
-}
-CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init);
-- 
2.29.2
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