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https://github.com/AsahiLinux/u-boot
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27 lines
599 B
C
27 lines
599 B
C
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// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <asm/arch/sci/sci.h>
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int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate)
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{
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sc_pm_clock_rate_t rate = clk_rate;
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int ret;
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/* Power up UARTn */
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ret = sc_pm_set_resource_power_mode(-1, uart_rsrc, SC_PM_PW_MODE_ON);
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if (ret)
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return ret;
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/* Set UARTn clock root to 'rate' MHz */
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ret = sc_pm_set_clock_rate(-1, uart_rsrc, SC_PM_CLK_PER, &rate);
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if (ret)
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return ret;
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/* Enable UARTn clock root */
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ret = sc_pm_clock_enable(-1, uart_rsrc, SC_PM_CLK_PER, true, false);
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if (ret)
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return ret;
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return 0;
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}
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