diff options
| author | Anson Huang <Anson.Huang@nxp.com> | 2019-01-15 10:56:36 +0800 |
|---|---|---|
| committer | Anson Huang <Anson.Huang@nxp.com> | 2019-01-17 10:49:48 +0800 |
| commit | d3996c590d7459dc0aedb989ddc35c15b80cf6dd (patch) | |
| tree | 00d69bd7ce431cf1095285f96c4a590f50288cf3 /plat/imx/common/imx_sip_handler.c | |
| parent | 025514ba80f9bd51af460ff29c4a325904c1812c (diff) | |
imx: add cpu-freq SIP runtime service support
On i.MX8QM/i.MX8QX with system controller inside, the CPU's clock
rate is managed by SCFW(system controller firmware) and can ONLY be
changed from secure world, so SIP runtime service is needed for
setting CPU's clock rate, this patch adds cpu-freq SIP runtime service
support.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Diffstat (limited to 'plat/imx/common/imx_sip_handler.c')
| -rw-r--r-- | plat/imx/common/imx_sip_handler.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/plat/imx/common/imx_sip_handler.c b/plat/imx/common/imx_sip_handler.c index a414a446..22a7f2b8 100644 --- a/plat/imx/common/imx_sip_handler.c +++ b/plat/imx/common/imx_sip_handler.c @@ -13,6 +13,12 @@ #include <imx_sip_svc.h> #include <sci/sci.h> +#ifdef PLAT_IMX8QM +const static int ap_cluster_index[PLATFORM_CLUSTER_COUNT] = { + SC_R_A53, SC_R_A72, +}; +#endif + static int imx_srtc_set_time(uint32_t year_mon, unsigned long day_hour, unsigned long min_sec) @@ -42,3 +48,31 @@ int imx_srtc_handler(uint32_t smc_fid, SMC_RET1(handle, ret); } + +static void imx_cpufreq_set_target(uint32_t cluster_id, unsigned long freq) +{ + sc_pm_clock_rate_t rate = (sc_pm_clock_rate_t)freq; + +#ifdef PLAT_IMX8QM + sc_pm_set_clock_rate(ipc_handle, ap_cluster_index[cluster_id], SC_PM_CLK_CPU, &rate); +#endif +#ifdef PLAT_IMX8QX + sc_pm_set_clock_rate(ipc_handle, SC_R_A35, SC_PM_CLK_CPU, &rate); +#endif +} + +int imx_cpufreq_handler(uint32_t smc_fid, + u_register_t x1, + u_register_t x2, + u_register_t x3) +{ + switch (x1) { + case IMX_SIP_SET_CPUFREQ: + imx_cpufreq_set_target(x2, x3); + break; + default: + return SMC_UNK; + } + + return 0; +} |