Add minimal imx7-ccm-regs.h that contains bare minimum definitions needed for early UART setup.
Acked-by: Sam Ravnborg <s...@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com> --- arch/arm/mach-imx/include/mach/imx7-ccm-regs.h | 32 ++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 arch/arm/mach-imx/include/mach/imx7-ccm-regs.h 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 000000000..a4217cca5 --- /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 -- 2.13.3 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
