diff options
| author | Jacky Bai <ping.bai@nxp.com> | 2020-01-07 14:39:15 +0800 |
|---|---|---|
| committer | Jacky Bai <ping.bai@nxp.com> | 2020-02-09 20:58:49 +0800 |
| commit | 6f36b7598926f49a061faab1e6d7c729e2ce4926 (patch) | |
| tree | 335f9d0ea66f1bd0fc17793f938ed9418c2022dc /plat/imx/imx8m/imx8m_csu.c | |
| parent | 4bd311ed653851ba3bb1cdad04dd40b98c241491 (diff) | |
plat: imx8m: Add a simple csu driver for imx8m family
Add a simple CSU driver for i.MX8M family.
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Diffstat (limited to 'plat/imx/imx8m/imx8m_csu.c')
| -rw-r--r-- | plat/imx/imx8m/imx8m_csu.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8m_csu.c b/plat/imx/imx8m/imx8m_csu.c new file mode 100644 index 00000000..3405fa59 --- /dev/null +++ b/plat/imx/imx8m/imx8m_csu.c @@ -0,0 +1,52 @@ +/* + * Copyright 2020 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <lib/mmio.h> + +#include <imx8m_csu.h> + +void imx_csu_init(const struct imx_csu_cfg *csu_cfg) +{ + const struct imx_csu_cfg *csu = csu_cfg; + uint32_t val; + + while (csu->type != CSU_INVALID) { + switch (csu->type) { + case CSU_CSL: + val = mmio_read_32(CSLx_REG(csu->idx)); + if (val & CSLx_LOCK(csu->idx)) + break; + mmio_clrsetbits_32(CSLx_REG(csu->idx), CSLx_CFG(0xff, csu->idx), + CSLx_CFG(csu->csl_level | (csu->lock << 8), csu->idx)); + break; + case CSU_HP: + val = mmio_read_32(CSU_HP_REG(csu->idx)); + if (val & CSU_HP_LOCK(csu->idx)) + break; + mmio_clrsetbits_32(CSU_HP_REG(csu->idx), CSU_HP_CFG(0x1, csu->idx), + CSU_HP_CFG(csu->hp | (csu->lock << 0x1), csu->idx)); + break; + case CSU_SA: + val = mmio_read_32(CSU_SA_REG(csu->idx)); + if (val & CSU_SA_LOCK(csu->idx)) + break; + mmio_clrsetbits_32(CSU_SA_REG(csu->idx), CSU_SA_CFG(0x1, csu->idx), + CSU_SA_CFG(csu->hp | (csu->lock << 0x1), csu->idx)); + break; + case CSU_HPCONTROL: + val = mmio_read_32(CSU_HPCONTROL_REG(csu->idx)); + if (val & CSU_HPCONTROL_LOCK(csu->idx)) + break; + mmio_clrsetbits_32(CSU_HPCONTROL_REG(csu->idx), CSU_HPCONTROL_CFG(0x1, csu->idx), + CSU_HPCONTROL_CFG(csu->hp | (csu->lock << 0x1), csu->idx)); + break; + default: + break; + } + + csu++; + } +} |