xref: /aosp_15_r20/external/coreboot/src/soc/nvidia/tegra/apbmisc.c (revision b9411a12aaaa7e1e6a6fb7c5e057f44ee179a49c) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #include <device/mmio.h>
4 #include <soc/addressmap.h>
5 
6 #include "apbmisc.h"
7 
8 static struct apbmisc *misc = (struct apbmisc *)TEGRA_APB_MISC_BASE;
9 
enable_jtag(void)10 void enable_jtag(void)
11 {
12 	write32(&misc->pp_config_ctl, PP_CONFIG_CTL_JTAG);
13 }
14 
clamp_tristate_inputs(void)15 void clamp_tristate_inputs(void)
16 {
17 	write32(&misc->pp_pinmux_global, PP_PINMUX_CLAMP_INPUTS);
18 }
19 
tegra_revision_info(struct tegra_revision * id)20 void tegra_revision_info(struct tegra_revision *id)
21 {
22 	uintptr_t gp_hidrev= (uintptr_t)TEGRA_APB_MISC_BASE + MISC_GP_HIDREV;
23 	uint32_t reg;
24 
25 	reg = read32((void *)(gp_hidrev));
26 
27 	id->hid_fam = (reg >> 0) & 0x0f;
28 	id->chip_id = (reg >> 8) & 0xff;
29 	id->major = (reg >> 4) & 0x0f;
30 	id->minor = (reg >> 16) & 0x07;
31 }
32