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author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2018-03-26 15:57:37 +0300 |
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committer | Alexey Brodkin <abrodkin@synopsys.com> | 2018-04-02 12:27:56 +0300 |
commit | ada8affdfe32bb621db09332a8267bab4ae5f312 (patch) | |
tree | f2f3af7aef5483823b1e9463932f887a3e4a4eeb /board/synopsys/hsdk/clk-lib.h | |
parent | 1e431185600009e008f01c70cff3e3ee5b4ec9b6 (diff) | |
download | u-boot-ada8affdfe32bb621db09332a8267bab4ae5f312.zip u-boot-ada8affdfe32bb621db09332a8267bab4ae5f312.tar.gz u-boot-ada8affdfe32bb621db09332a8267bab4ae5f312.tar.bz2 |
ARC: HSDK: Add platform-specific commands
This patch add support of hsdk platform-specific commands:
hsdk_clock set - set clock from axi_freq, cpu_freq and tun_freq
environment variables/command line arguments
hsdk_clock get - save clock frequencies to axi_freq, cpu_freq
and tun_freq environment variables
hsdk_clock print - show CPU, AXI, DDR and TUNNEL current
clock frequencies.
hsdk_clock print_all - show all currently used clock frequencies.
hsdk_init - setup board HW in one of pre-defined configuration
(hsdk_hs34 / hsdk_hs36 / hsdk_hs36_ccm / hsdk_hs38 /
hsdk_hs38_ccm / hsdk_hs38x2 / hsdk_hs38x3 / hsdk_hs38x4)
hsdk_go - run baremetal application on hsdk configured
by hsdk_init command.
This patch changes default behaviour of 'bootm' command:
now we are able to set number of CPUs to be kicked by setting
'core_mask' environment variable before 'bootm' command run.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'board/synopsys/hsdk/clk-lib.h')
-rw-r--r-- | board/synopsys/hsdk/clk-lib.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/board/synopsys/hsdk/clk-lib.h b/board/synopsys/hsdk/clk-lib.h new file mode 100644 index 0000000..3b7dbc5 --- /dev/null +++ b/board/synopsys/hsdk/clk-lib.h @@ -0,0 +1,38 @@ +/* + * Copyright (C) 2018 Synopsys, Inc. All rights reserved. + * Author: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __BOARD_CLK_LIB_H +#define __BOARD_CLK_LIB_H + +#include <common.h> + +enum clk_ctl_ops { + CLK_SET = BIT(0), /* set frequency */ + CLK_GET = BIT(1), /* get frequency */ + CLK_ON = BIT(2), /* enable clock */ + CLK_OFF = BIT(3), /* disable clock */ + CLK_PRINT = BIT(4), /* print frequency */ + CLK_MHZ = BIT(5) /* all values in MHZ instead of HZ */ +}; + +/* + * Depending on the clk_ctl_ops enable / disable / + * set clock rate from 'rate' argument / read clock to 'rate' argument / + * print clock rate. If CLK_MHZ flag set in clk_ctl_ops 'rate' is in MHz, + * otherwise - in Hz. + * + * This function expects "clk-fmeas" node in device tree: + * / { + * clk-fmeas { + * clocks = <&cpu_pll>, <&sys_pll>; + * clock-names = "cpu-pll", "sys-pll"; + * }; + * }; + */ +int soc_clk_ctl(const char *name, ulong *rate, enum clk_ctl_ops ctl); + +#endif /* __BOARD_CLK_LIB_H */ |