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authorTrevor Woerner <twoerner@gmail.com>2020-05-06 08:02:36 -0400
committerTom Rini <trini@konsulko.com>2020-05-15 14:47:35 -0400
commitb3d9a8b1857878fd72bf5385d91585fbafe516d6 (patch)
treefd11b9f6b343aabb33247b4b3fe4ccfde1cc8a6f /arch/arm/cpu/arm926ejs/lpc32xx/clk.c
parent0ff042d836f2a40b2104d4501111fbb340293c5c (diff)
arm: lpc32xx: move SoC to mach-lpc32xx
Following the example of most other SoCs in arch/$(ARCH)/cpu/$(CPU)/$(SOC) move the lpc32xx code from arch/arm/cpu/arm926ejs/lpc32xx to arch/arm/mach-lpc32xx. Following the checklist from commit 01f14456306c ("ARM: prepare for moving SoC sources into mach-*"): [1] move files from arch/arm/cpu/arm926ejs/lpc32xx to arch/arm/mach-lpx32xx [2] add machine entry to arch/arm/Makefile [3] remove "obj-y += ..." from arch/arm/cpu/arm926ejs/Makefile [4] fix the Kconfig file path in arch/arm/Kconfig [5] (no MAINTAINERS update) Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Diffstat (limited to 'arch/arm/cpu/arm926ejs/lpc32xx/clk.c')
-rw-r--r--arch/arm/cpu/arm926ejs/lpc32xx/clk.c138
1 files changed, 0 insertions, 138 deletions
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/clk.c b/arch/arm/cpu/arm926ejs/lpc32xx/clk.c
deleted file mode 100644
index cb2344d79f..0000000000
--- a/arch/arm/cpu/arm926ejs/lpc32xx/clk.c
+++ /dev/null
@@ -1,138 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
- */
-
-#include <common.h>
-#include <clock_legacy.h>
-#include <div64.h>
-#include <asm/arch/cpu.h>
-#include <asm/arch/clk.h>
-#include <asm/io.h>
-
-static struct clk_pm_regs *clk = (struct clk_pm_regs *)CLK_PM_BASE;
-
-unsigned int get_sys_clk_rate(void)
-{
- if (readl(&clk->sysclk_ctrl) & CLK_SYSCLK_PLL397)
- return RTC_CLK_FREQUENCY * 397;
- else
- return OSC_CLK_FREQUENCY;
-}
-
-unsigned int get_hclk_pll_rate(void)
-{
- unsigned long long fin, fref, fcco, fout;
- u32 val, m_div, n_div, p_div;
-
- /*
- * Valid frequency ranges:
- * 1 * 10^6 <= Fin <= 20 * 10^6
- * 1 * 10^6 <= Fref <= 27 * 10^6
- * 156 * 10^6 <= Fcco <= 320 * 10^6
- */
-
- fref = fin = get_sys_clk_rate();
- if (fin > 20000000ULL || fin < 1000000ULL)
- return 0;
-
- val = readl(&clk->hclkpll_ctrl);
- m_div = ((val & CLK_HCLK_PLL_FEEDBACK_DIV_MASK) >> 1) + 1;
- n_div = ((val & CLK_HCLK_PLL_PREDIV_MASK) >> 9) + 1;
- if (val & CLK_HCLK_PLL_DIRECT)
- p_div = 0;
- else
- p_div = ((val & CLK_HCLK_PLL_POSTDIV_MASK) >> 11) + 1;
- p_div = 1 << p_div;
-
- if (val & CLK_HCLK_PLL_BYPASS) {
- do_div(fin, p_div);
- return fin;
- }
-
- do_div(fref, n_div);
- if (fref > 27000000ULL || fref < 1000000ULL)
- return 0;
-
- fcco = fref * m_div;
- fout = fcco;
- if (val & CLK_HCLK_PLL_FEEDBACK)
- fcco *= p_div;
- else
- do_div(fout, p_div);
-
- if (fcco > 320000000ULL || fcco < 156000000ULL)
- return 0;
-
- return fout;
-}
-
-unsigned int get_hclk_clk_div(void)
-{
- u32 val;
-
- val = readl(&clk->hclkdiv_ctrl) & CLK_HCLK_ARM_PLL_DIV_MASK;
-
- return 1 << val;
-}
-
-unsigned int get_hclk_clk_rate(void)
-{
- return get_hclk_pll_rate() / get_hclk_clk_div();
-}
-
-unsigned int get_periph_clk_div(void)
-{
- u32 val;
-
- val = readl(&clk->hclkdiv_ctrl) & CLK_HCLK_PERIPH_DIV_MASK;
-
- return (val >> 2) + 1;
-}
-
-unsigned int get_periph_clk_rate(void)
-{
- if (!(readl(&clk->pwr_ctrl) & CLK_PWR_NORMAL_RUN))
- return get_sys_clk_rate();
-
- return get_hclk_pll_rate() / get_periph_clk_div();
-}
-
-unsigned int get_sdram_clk_rate(void)
-{
- unsigned int src_clk;
-
- if (!(readl(&clk->pwr_ctrl) & CLK_PWR_NORMAL_RUN))
- return get_sys_clk_rate();
-
- src_clk = get_hclk_pll_rate();
-
- if (readl(&clk->sdramclk_ctrl) & CLK_SDRAM_DDR_SEL) {
- /* using DDR */
- switch (readl(&clk->hclkdiv_ctrl) & CLK_HCLK_DDRAM_MASK) {
- case CLK_HCLK_DDRAM_HALF:
- return src_clk/2;
- case CLK_HCLK_DDRAM_NOMINAL:
- return src_clk;
- default:
- return 0;
- }
- } else {
- /* using SDR */
- switch (readl(&clk->hclkdiv_ctrl) & CLK_HCLK_ARM_PLL_DIV_MASK) {
- case CLK_HCLK_ARM_PLL_DIV_4:
- return src_clk/4;
- case CLK_HCLK_ARM_PLL_DIV_2:
- return src_clk/2;
- case CLK_HCLK_ARM_PLL_DIV_1:
- return src_clk;
- default:
- return 0;
- }
- }
-}
-
-int get_serial_clock(void)
-{
- return get_periph_clk_rate();
-}