diff options
Diffstat (limited to 'drivers/clk/at91/clk-plladiv.c')
| -rw-r--r-- | drivers/clk/at91/clk-plladiv.c | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/drivers/clk/at91/clk-plladiv.c b/drivers/clk/at91/clk-plladiv.c deleted file mode 100644 index ca6158ef6a..0000000000 --- a/drivers/clk/at91/clk-plladiv.c +++ /dev/null @@ -1,85 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2018 Microhip / Atmel Corporation - * Wenyou.Yang <wenyou.yang@microchip.com> - */ - -#include <common.h> -#include <clk-uclass.h> -#include <dm/device.h> -#include <linux/io.h> -#include <mach/at91_pmc.h> -#include "pmc.h" - -static int at91_plladiv_clk_enable(struct clk *clk) -{ - return 0; -} - -static ulong at91_plladiv_clk_get_rate(struct clk *clk) -{ - struct pmc_platdata *plat = dev_get_platdata(clk->dev); - struct at91_pmc *pmc = plat->reg_base; - struct clk source; - ulong clk_rate; - int ret; - - ret = clk_get_by_index(clk->dev, 0, &source); - if (ret) - return -EINVAL; - - clk_rate = clk_get_rate(&source); - if (readl(&pmc->mckr) & AT91_PMC_MCKR_PLLADIV_2) - clk_rate /= 2; - - return clk_rate; -} - -static ulong at91_plladiv_clk_set_rate(struct clk *clk, ulong rate) -{ - struct pmc_platdata *plat = dev_get_platdata(clk->dev); - struct at91_pmc *pmc = plat->reg_base; - struct clk source; - ulong parent_rate; - int ret; - - ret = clk_get_by_index(clk->dev, 0, &source); - if (ret) - return -EINVAL; - - parent_rate = clk_get_rate(&source); - if ((parent_rate != rate) && ((parent_rate) / 2 != rate)) - return -EINVAL; - - if (parent_rate != rate) { - writel((readl(&pmc->mckr) | AT91_PMC_MCKR_PLLADIV_2), - &pmc->mckr); - } - - return 0; -} - -static struct clk_ops at91_plladiv_clk_ops = { - .enable = at91_plladiv_clk_enable, - .get_rate = at91_plladiv_clk_get_rate, - .set_rate = at91_plladiv_clk_set_rate, -}; - -static int at91_plladiv_clk_probe(struct udevice *dev) -{ - return at91_pmc_core_probe(dev); -} - -static const struct udevice_id at91_plladiv_clk_match[] = { - { .compatible = "atmel,at91sam9x5-clk-plldiv" }, - {} -}; - -U_BOOT_DRIVER(at91_plladiv_clk) = { - .name = "at91-plladiv-clk", - .id = UCLASS_CLK, - .of_match = at91_plladiv_clk_match, - .probe = at91_plladiv_clk_probe, - .platdata_auto_alloc_size = sizeof(struct pmc_platdata), - .ops = &at91_plladiv_clk_ops, -}; |