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| author | Sang-Heon Jeon <ekffu200098@gmail.com> | 2026-08-24 01:18:14 +0900 |
|---|---|---|
| committer | Julia Lawall <Julia.Lawall@inria.fr> | 2026-08-23 22:12:11 +0200 |
| commit | 2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c (patch) | |
| tree | dcc4da1d99f17541c5590ac63c77da4bf372a4ab /arch/powerpc/boot/mpc8xx.c | |
| download | linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.tar.gz linux-stable-2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c.zip | |
coccinelle: alloc_cast: drop removed allocatorsgrafted
- pci_alloc_consistent() and pci_zalloc_consistent() were removed by
commit 7968778914e5
("PCI: Remove the deprecated "pci-dma-compat.h" API")
- kmem_alloc() was removed by commit f078d4ea8276
("xfs: convert kmem_alloc() to kmalloc()")
- kmem_zalloc() was removed by commit 10634530f7ba
("xfs: convert kmem_zalloc() to kzalloc()")
- kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit
bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers")
So drop them from the rules.
No functional change.
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Diffstat (limited to 'arch/powerpc/boot/mpc8xx.c')
| -rw-r--r-- | arch/powerpc/boot/mpc8xx.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/powerpc/boot/mpc8xx.c b/arch/powerpc/boot/mpc8xx.c new file mode 100644 index 000000000..e19ef64df --- /dev/null +++ b/arch/powerpc/boot/mpc8xx.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * MPC8xx support functions + * + * Author: Scott Wood <scottwood@freescale.com> + * + * Copyright (c) 2007 Freescale Semiconductor, Inc. + */ + +#include "ops.h" +#include "types.h" +#include "fsl-soc.h" +#include "mpc8xx.h" +#include "stdio.h" +#include "io.h" + +#define MPC8XX_PLPRCR (0x284/4) /* PLL and Reset Control Register */ + +/* Return system clock from crystal frequency */ +u32 mpc885_get_clock(u32 crystal) +{ + u32 *immr; + u32 plprcr; + int mfi, mfn, mfd, pdf; + u32 ret; + + immr = fsl_get_immr(); + if (!immr) { + printf("mpc885_get_clock: Couldn't get IMMR base.\r\n"); + return 0; + } + + plprcr = in_be32(&immr[MPC8XX_PLPRCR]); + + mfi = (plprcr >> 16) & 15; + if (mfi < 5) { + printf("Warning: PLPRCR[MFI] value of %d out-of-bounds\r\n", + mfi); + mfi = 5; + } + + pdf = (plprcr >> 1) & 0xf; + mfd = (plprcr >> 22) & 0x1f; + mfn = (plprcr >> 27) & 0x1f; + + ret = crystal * mfi; + + if (mfn != 0) + ret += crystal * mfn / (mfd + 1); + + return ret / (pdf + 1); +} + +/* Set common device tree fields based on the given clock frequencies. */ +void mpc8xx_set_clocks(u32 sysclk) +{ + void *node; + + dt_fixup_cpu_clocks(sysclk, sysclk / 16, sysclk); + + node = finddevice("/soc/cpm"); + if (node) + setprop(node, "clock-frequency", &sysclk, 4); + + node = finddevice("/soc/cpm/brg"); + if (node) + setprop(node, "clock-frequency", &sysclk, 4); +} + +int mpc885_fixup_clocks(u32 crystal) +{ + u32 sysclk = mpc885_get_clock(crystal); + if (!sysclk) + return 0; + + mpc8xx_set_clocks(sysclk); + return 1; +} |
