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| author | Andrey Smirnov <andrew.smirnov@gmail.com> | 2017-07-28 07:44:23 -0700 |
|---|---|---|
| committer | Lucas Stach <l.stach@pengutronix.de> | 2017-07-30 21:20:03 +0200 |
| commit | d77c3fd13d35de046ebcf2f0778cb67a22bf6b3a (patch) | |
| tree | 2b507c48e6092b3ae7348a7a220998f53cebfd30 /arch | |
| parent | 28e8db159f25024dad5e11f03a0fabe055c2df81 (diff) | |
| download | barebox-d77c3fd13d35de046ebcf2f0778cb67a22bf6b3a.tar.gz barebox-d77c3fd13d35de046ebcf2f0778cb67a22bf6b3a.tar.xz | |
ARM: i.MX: Add minimal imx7-ccm-regs.h
Add minimal imx7-ccm-regs.h that contains bare minimum definitions
needed for early UART setup.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/imx7-ccm-regs.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h new file mode 100644 index 0000000000..a4217cca5d --- /dev/null +++ b/arch/arm/mach-imx/include/mach/imx7-ccm-regs.h @@ -0,0 +1,32 @@ +#ifndef __MACH_IMX7_CCM_REGS_H__ +#define __MACH_IMX7_CCM_REGS_H__ + +/* 0 <= n <= 190 */ +#define CCM_CCGRn_SET(n) (0x4004 + 16 * (n)) +#define CCM_CCGRn_CLR(n) (0x4008 + 16 * (n)) + +#define CCM_CCGR_UART1 148 + +#define CCM_CCGR_SETTINGn(n, s) ((s) << ((n) * 4)) +#define CCM_CCGR_SETTINGn_NOT_NEEDED(n) CCM_CCGR_SETTINGn(n, 0b00) +#define CCM_CCGR_SETTINGn_NEEDED_RUN(n) CCM_CCGR_SETTINGn(n, 0b01) +#define CCM_CCGR_SETTINGn_NEEDED_RUN_WAIT(n) CCM_CCGR_SETTINGn(n, 0b10) +#define CCM_CCGR_SETTINGn_NEEDED(n) CCM_CCGR_SETTINGn(n, 0b11) + +/* 0 <= n <= 120 */ +#define CCM_TARGET_ROOTn(n) (0x8000 + 128 * (n)) + +#define CCM_TARGET_ROOTn_MUX(x) ((x) << 24) +#define CCM_TARGET_ROOTn_ENABLE BIT(28) + +#define CLOCK_ROOT_INDEX(x) (((x) - 0x8000) / 128) + +/* + * Taken from "Table 5-11. Clock Root Table" from i.MX7 Dual Processor + * Reference Manual + */ +#define UART1_CLK_ROOT CLOCK_ROOT_INDEX(0xaf80) +#define UART1_CLK_ROOT__OSC_24M CCM_TARGET_ROOTn_MUX(0b000) + + +#endif |