diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0071-peci-add-a-temporary-workaround.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0071-peci-add-a-temporary-workaround.patch | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0071-peci-add-a-temporary-workaround.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0071-peci-add-a-temporary-workaround.patch deleted file mode 100644 index e32ec54ac..000000000 --- a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0071-peci-add-a-temporary-workaround.patch +++ /dev/null @@ -1,101 +0,0 @@ -From 3394fabbd17ad7263feeb0f4ae593056237f0647 Mon Sep 17 00:00:00 2001 -From: Jae Hyun Yoo <jae.hyun.yoo@intel.com> -Date: Tue, 30 Jul 2019 13:01:58 -0700 -Subject: [PATCH] peci: add a temporary workaround - -To cover a PECI issue, this commit makes PECI driver block all PECI -commands when PLTRST_N signal is 0. - -Also, it adds 'use_wa' module parameter for platforms that don't have -the PLTRST_N gpio input so that the WA can be disabled through the -module parameter. - -This is a temporary workaround. - -Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> ---- - drivers/peci/busses/peci-aspeed.c | 11 +++++++++++ - drivers/peci/peci-core.c | 11 +++++++++++ - include/linux/peci.h | 1 + - 3 files changed, 23 insertions(+) - -diff --git a/drivers/peci/busses/peci-aspeed.c b/drivers/peci/busses/peci-aspeed.c -index 8a0dd40730cc..76394ab32854 100644 ---- a/drivers/peci/busses/peci-aspeed.c -+++ b/drivers/peci/busses/peci-aspeed.c -@@ -10,6 +10,7 @@ - #include <linux/jiffies.h> - #include <linux/module.h> - #include <linux/of.h> -+#include <linux/of_gpio.h> - #include <linux/peci.h> - #include <linux/platform_device.h> - #include <linux/reset.h> -@@ -445,6 +446,16 @@ static int aspeed_peci_probe(struct platform_device *pdev) - if (ret) - goto err_put_adapter_dev; - -+ priv->adapter->pltrst_pin = of_get_gpio(pdev->dev.of_node, 0); -+ if (gpio_is_valid(priv->adapter->pltrst_pin)) { -+ ret = devm_gpio_request(&pdev->dev, priv->adapter->pltrst_pin, -+ "peci-aspeed"); -+ if (ret < 0) { -+ priv->adapter->pltrst_pin = -1; -+ dev_err(&pdev->dev, "error requesting pltrst gpio\n"); -+ } -+ } -+ - ret = peci_add_adapter(priv->adapter); - if (ret) - goto err_put_adapter_dev; -diff --git a/drivers/peci/peci-core.c b/drivers/peci/peci-core.c -index b99ba788a032..2e3b9a0c83e9 100644 ---- a/drivers/peci/peci-core.c -+++ b/drivers/peci/peci-core.c -@@ -5,6 +5,7 @@ - #include <linux/crc8.h> - #include <linux/delay.h> - #include <linux/mm.h> -+#include <linux/gpio.h> - #include <linux/module.h> - #include <linux/of_device.h> - #include <linux/peci.h> -@@ -190,6 +191,11 @@ static int peci_aw_fcs(struct peci_xfer_msg *msg, int len, u8 *aw_fcs) - return 0; - } - -+/* Temporary WA */ -+static bool use_wa __read_mostly = true; -+module_param_named(use_wa, use_wa, bool, 0644); -+MODULE_PARM_DESC(use_wa, "flag for enabling of WA"); -+ - static int __peci_xfer(struct peci_adapter *adapter, struct peci_xfer_msg *msg, - bool do_retry, bool has_aw_fcs) - { -@@ -197,6 +203,11 @@ static int __peci_xfer(struct peci_adapter *adapter, struct peci_xfer_msg *msg, - u8 aw_fcs; - int ret; - -+ /* Temporary WA */ -+ if (use_wa && gpio_is_valid(adapter->pltrst_pin) && -+ gpio_get_value(adapter->pltrst_pin) == 0) -+ return -EAGAIN; -+ - /* - * In case if adapter uses DMA, check at here whether tx and rx buffers - * are DMA capable or not. -diff --git a/include/linux/peci.h b/include/linux/peci.h -index 6fc424dc2a73..e589cb258a2a 100644 ---- a/include/linux/peci.h -+++ b/include/linux/peci.h -@@ -44,6 +44,7 @@ struct peci_adapter { - struct peci_xfer_msg *msg); - u32 cmd_mask; - bool use_dma; -+ int pltrst_pin; - }; - - static inline struct peci_adapter *to_peci_adapter(void *d) --- -2.7.4 - |