diff options
| author | Cedric Neveux <cedric.neveux@nxp.com> | 2018-12-17 11:33:10 +0100 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:35:59 +0800 |
| commit | 41604a3382306b78f1038524a1018647f3cf3f52 (patch) | |
| tree | d5ccdbbf12f113b3f9d822a60a09e4b7c7fc4fd8 /drivers/tee | |
| parent | c7596ecd9ba0e08280f3ce86bb6e9fbfa2a88b91 (diff) | |
TEE-349 RPC Busfreq High
Call request/release busfreq HIGH each time a SMC
is called.
This ensure that OPTEE is running in HIGH frequency mode
until no more SMC running
Signed-off-by: Cedric Neveux <cedric.neveux@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'drivers/tee')
| -rw-r--r-- | drivers/tee/optee/call.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/tee/optee/call.c b/drivers/tee/optee/call.c index f7b7b404c990..c07b654ef797 100644 --- a/drivers/tee/optee/call.c +++ b/drivers/tee/optee/call.c @@ -22,6 +22,11 @@ #include "optee_private.h" #include "optee_smc.h" +#if defined(CONFIG_SOC_IMX6) || defined(CONFIG_SOC_IMX7) \ + || (CONFIG_HAVE_IMX8_SOC) +#include <linux/busfreq-imx.h> +#endif + struct optee_call_waiter { struct list_head list_node; struct completion c; @@ -139,8 +144,19 @@ u32 optee_do_call_with_arg(struct tee_context *ctx, phys_addr_t parg) param.a0 = OPTEE_SMC_CALL_WITH_ARG; reg_pair_from_64(¶m.a1, ¶m.a2, parg); + /* Initialize waiter */ optee_cq_wait_init(&optee->call_queue, &w); + +#if defined(CONFIG_SOC_IMX6) || defined(CONFIG_SOC_IMX7) \ + || (CONFIG_HAVE_IMX8_SOC) + /* + * Request Busfreq to HIGH to prevent DDR self-refresh while + * executing Secure stuff + */ + request_bus_freq(BUS_FREQ_HIGH); +#endif + while (true) { struct arm_smccc_res res; @@ -166,6 +182,14 @@ u32 optee_do_call_with_arg(struct tee_context *ctx, phys_addr_t parg) } } +#if defined(CONFIG_SOC_IMX6) || defined(CONFIG_SOC_IMX7) \ + || (CONFIG_HAVE_IMX8_SOC) + /* + * Release Busfreq from HIGH + */ + release_bus_freq(BUS_FREQ_HIGH); +#endif + /* * We're done with our thread in secure world, if there's any * thread waiters wake up one. |