From e3df3607a4e14bd60d67bc68b8687bb9657d183e Mon Sep 17 00:00:00 2001 From: Roland Hieber Date: Mon, 13 Aug 2018 15:02:55 +0200 Subject: ARM: MXS: make power levels configurable in mx2*_power_init Depending on the application, board code might want to configure different power levels and brownout thresholds. They can do so now with an additional struct mxs_power_ctrls* parameter to mx2*_power_init. Note that VDDMEM was not set up explicitely in mx28_power_init, but can now be configured. However, mx28_power_default->vddmem is NULL, so the old behaviour is still the case when using those default values. Signed-off-by: Roland Hieber Signed-off-by: Sascha Hauer --- arch/arm/mach-mxs/include/mach/init.h | 22 ++++++++++++-- arch/arm/mach-mxs/power-init.c | 55 +++++++++++++++++++++++++++++------ 2 files changed, 66 insertions(+), 11 deletions(-) (limited to 'arch/arm/mach-mxs') diff --git a/arch/arm/mach-mxs/include/mach/init.h b/arch/arm/mach-mxs/include/mach/init.h index aa3c68facb..53c1e05634 100644 --- a/arch/arm/mach-mxs/include/mach/init.h +++ b/arch/arm/mach-mxs/include/mach/init.h @@ -32,8 +32,26 @@ static inline enum mxs_power_config mxs_power_config_get_use(void) { } -void mx23_power_init(const int config); -void mx28_power_init(const int config); +struct mxs_power_ctrl { + uint32_t target; /*< target voltage */ + uint32_t brownout; /*< brownout threshhold */ +}; +struct mxs_power_ctrls { + struct mxs_power_ctrl * vdda; /*< if non-null, set values for VDDA */ + struct mxs_power_ctrl * vddd; /*< if non-null, set values for VDDD */ + struct mxs_power_ctrl * vddio; /*< if non-null, set values for VDDIO */ + struct mxs_power_ctrl * vddmem; /*< if non-null, set values for VDDMEM */ +}; + +extern struct mxs_power_ctrl mxs_vddio_default; +extern struct mxs_power_ctrl mxs_vddd_default; +extern struct mxs_power_ctrl mxs_vdda_default; +extern struct mxs_power_ctrl mx23_vddmem_default; +extern struct mxs_power_ctrls mx23_power_default; +extern struct mxs_power_ctrls mx28_power_default; + +void mx23_power_init(const int config, struct mxs_power_ctrls *ctrls); +void mx28_power_init(const int config, struct mxs_power_ctrls *ctrls); void mxs_power_wait_pswitch(void); extern const uint32_t mx28_dram_vals_default[190]; diff --git a/arch/arm/mach-mxs/power-init.c b/arch/arm/mach-mxs/power-init.c index 60fa0cb022..490ea4ba2d 100644 --- a/arch/arm/mach-mxs/power-init.c +++ b/arch/arm/mach-mxs/power-init.c @@ -1165,6 +1165,17 @@ static void mx23_ungate_power(void) writel(MX23_POWER_CTRL_CLKGATE, &power_regs->hw_power_ctrl_clr); } +struct mxs_power_ctrl mxs_vddd_default = { .target = 1500, .brownout = 1325 }; +struct mxs_power_ctrl mxs_vdda_default = { .target = 1800, .brownout = 1650 }; +struct mxs_power_ctrl mxs_vddio_default = { .target = 3300, .brownout = 3150 }; +struct mxs_power_ctrl mx23_vddmem_default = { .target = 2500, .brownout = 1700 }; +struct mxs_power_ctrls mx23_power_default = { + .vdda = &mxs_vdda_default, + .vddd = &mxs_vddd_default, + .vddio = &mxs_vddio_default, + .vddmem = &mx23_vddmem_default, +}; + /** * mx23_power_init() - The power block init main function * @@ -1172,8 +1183,9 @@ static void mx23_ungate_power(void) * proper sequence to start the power block. * * @config: see enum mxs_power_config for possible options + * @ctrls: a mxs_power_ctrls struct, or use &mx23_power_default for default values */ -void mx23_power_init(const int config) +void mx23_power_init(const int config, struct mxs_power_ctrls *ctrls) { struct mxs_power_regs *power_regs = (struct mxs_power_regs *)IMX_POWER_BASE; @@ -1210,10 +1222,18 @@ void mx23_power_init(const int config) mxs_enable_output_rail_protection(); - mxs_power_set_vddx(&mx23_vddio_cfg, 3300, 3150); - mxs_power_set_vddx(&mxs_vddd_cfg, 1500, 1325); - mxs_power_set_vddx(&mxs_vddmem_cfg, 2500, 1700); - mxs_power_set_vddx(&mxs_vdda_cfg, 1800, 1650); + if (ctrls->vddio) + mxs_power_set_vddx(&mx23_vddio_cfg, ctrls->vddio->target, + ctrls->vddio->brownout); + if (ctrls->vddd) + mxs_power_set_vddx(&mxs_vddd_cfg, ctrls->vddd->target, + ctrls->vddd->brownout); + if (ctrls->vddmem) + mxs_power_set_vddx(&mxs_vddmem_cfg, ctrls->vddmem->target, + ctrls->vddmem->brownout); + if (ctrls->vdda) + mxs_power_set_vddx(&mxs_vdda_cfg, ctrls->vdda->target, + ctrls->vdda->brownout); writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ | @@ -1225,6 +1245,13 @@ void mx23_power_init(const int config) mxs_early_delay(1000); } +struct mxs_power_ctrls mx28_power_default = { + .vdda = &mxs_vdda_default, + .vddd = &mxs_vddd_default, + .vddio = &mxs_vddio_default, + .vddmem = NULL, +}; + /** * mx28_power_init() - The power block init main function * @@ -1232,8 +1259,9 @@ void mx23_power_init(const int config) * proper sequence to start the power block. * * @config: see enum mxs_power_config for possible options + * @ctrls: a mxs_power_ctrls struct, or use &mx28_power_default for default values */ -void mx28_power_init(const int config) +void mx28_power_init(const int config, struct mxs_power_ctrls *ctrls) { struct mxs_power_regs *power_regs = (struct mxs_power_regs *)IMX_POWER_BASE; @@ -1265,9 +1293,18 @@ void mx28_power_init(const int config) mxs_enable_output_rail_protection(); - mxs_power_set_vddx(&mx28_vddio_cfg, 3300, 3150); - mxs_power_set_vddx(&mxs_vddd_cfg, 1500, 1325); - mxs_power_set_vddx(&mxs_vdda_cfg, 1800, 1650); + if (ctrls->vddio) + mxs_power_set_vddx(&mx28_vddio_cfg, ctrls->vddio->target, + ctrls->vddio->brownout); + if (ctrls->vddd) + mxs_power_set_vddx(&mxs_vddd_cfg, ctrls->vddd->target, + ctrls->vddd->brownout); + if (ctrls->vddmem) + mxs_power_set_vddx(&mxs_vddmem_cfg, ctrls->vddmem->target, + ctrls->vddmem->brownout); + if (ctrls->vdda) + mxs_power_set_vddx(&mxs_vdda_cfg, ctrls->vdda->target, + ctrls->vdda->brownout); writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ | POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ | -- cgit v1.2.3