treewide: remove files for building 5.10 kernel

[openwrt/openwrt.git] / target / linux / generic / backport-5.10 / 813-v6.3-0008-nvmem-stm32-detect-bsec-pta-presence-for-STM32MP15x.patch

diff --git a/target/linux/generic/backport-5.10/813-v6.3-0008-nvmem-stm32-detect-bsec-pta-presence-for-STM32MP15x.patch b/target/linux/generic/backport-5.10/813-v6.3-0008-nvmem-stm32-detect-bsec-pta-presence-for-STM32MP15x.patch
deleted file mode 100644 (file)
index cea8e93..0000000
--- a/target/linux/generic/backport-5.10/813-v6.3-0008-nvmem-stm32-detect-bsec-pta-presence-for-STM32MP15x.patch
+++ /dev/null
@@ -1,85 +0,0 @@
-From df2f34ef1d924125ffaf29dfdaf7cdbd3183c321 Mon Sep 17 00:00:00 2001
-From: Patrick Delaunay <patrick.delaunay@foss.st.com>
-Date: Mon, 6 Feb 2023 13:43:52 +0000
-Subject: [PATCH] nvmem: stm32: detect bsec pta presence for STM32MP15x
-
-On STM32MP15x SoC, the SMC backend is optional when OP-TEE is used;
-the PTA BSEC should be used as it is done on STM32MP13x platform,
-but the BSEC SMC can be also used: it is a legacy mode in OP-TEE,
-not recommended but used in previous OP-TEE firmware.
-
-The presence of OP-TEE is dynamically detected in STM32MP15x device tree
-and the supported NVMEM backend is dynamically detected:
-- PTA with stm32_bsec_pta_find
-- SMC with stm32_bsec_check
-
-With OP-TEE but without PTA and SMC detection, the probe is deferred for
-STM32MP15x devices.
-
-On STM32MP13x platform, only the PTA is supported with cfg->ta = true
-and this detection is skipped.
-
-Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
-Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
-Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
-Link: https://lore.kernel.org/r/20230206134356.839737-19-srinivas.kandagatla@linaro.org
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- drivers/nvmem/stm32-romem.c | 38 +++++++++++++++++++++++++++++++++----
- 1 file changed, 34 insertions(+), 4 deletions(-)
-
---- a/drivers/nvmem/stm32-romem.c
-+++ b/drivers/nvmem/stm32-romem.c
-@@ -159,6 +159,31 @@ static int stm32_bsec_pta_write(void *co
-       return stm32_bsec_optee_ta_write(priv->ctx, priv->lower, offset, buf, bytes);
- }
- 
-+static bool stm32_bsec_smc_check(void)
-+{
-+      u32 val;
-+      int ret;
-+
-+      /* check that the OP-TEE support the BSEC SMC (legacy mode) */
-+      ret = stm32_bsec_smc(STM32_SMC_READ_SHADOW, 0, 0, &val);
-+
-+      return !ret;
-+}
-+
-+static bool optee_presence_check(void)
-+{
-+      struct device_node *np;
-+      bool tee_detected = false;
-+
-+      /* check that the OP-TEE node is present and available. */
-+      np = of_find_compatible_node(NULL, NULL, "linaro,optee-tz");
-+      if (np && of_device_is_available(np))
-+              tee_detected = true;
-+      of_node_put(np);
-+
-+      return tee_detected;
-+}
-+
- static int stm32_romem_probe(struct platform_device *pdev)
- {
-       const struct stm32_romem_cfg *cfg;
-@@ -195,11 +220,16 @@ static int stm32_romem_probe(struct plat
-       } else {
-               priv->cfg.size = cfg->size;
-               priv->lower = cfg->lower;
--              if (cfg->ta) {
-+              if (cfg->ta || optee_presence_check()) {
-                       rc = stm32_bsec_optee_ta_open(&priv->ctx);
--                      /* wait for OP-TEE client driver to be up and ready */
--                      if (rc)
--                              return rc;
-+                      if (rc) {
-+                              /* wait for OP-TEE client driver to be up and ready */
-+                              if (rc == -EPROBE_DEFER)
-+                                      return -EPROBE_DEFER;
-+                              /* BSEC PTA is required or SMC not supported */
-+                              if (cfg->ta || !stm32_bsec_smc_check())
-+                                      return rc;
-+                      }
-               }
-               if (priv->ctx) {
-                       rc = devm_add_action_or_reset(dev, stm32_bsec_optee_ta_close, priv->ctx);