diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/813-pm-0005-soc-fsl-handle-RCPM-errata-A-008646-on-SoC-LS1021A.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/813-pm-0005-soc-fsl-handle-RCPM-errata-A-008646-on-SoC-LS1021A.patch | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/target/linux/layerscape/patches-5.4/813-pm-0005-soc-fsl-handle-RCPM-errata-A-008646-on-SoC-LS1021A.patch b/target/linux/layerscape/patches-5.4/813-pm-0005-soc-fsl-handle-RCPM-errata-A-008646-on-SoC-LS1021A.patch deleted file mode 100644 index faf5627b9d..0000000000 --- a/target/linux/layerscape/patches-5.4/813-pm-0005-soc-fsl-handle-RCPM-errata-A-008646-on-SoC-LS1021A.patch +++ /dev/null @@ -1,100 +0,0 @@ -From 12ae7ff3ecb4527ebe30ec6feb29ebb0ec4cd0a7 Mon Sep 17 00:00:00 2001 -From: Biwen Li <biwen.li@nxp.com> -Date: Sat, 14 Sep 2019 12:37:49 +0800 -Subject: [PATCH] soc: fsl: handle RCPM errata A-008646 on SoC LS1021A - -Description: - - Reading configuration register RCPM_IPPDEXPCR1 - always return zero - -Workaround: - - Save register RCPM_IPPDEXPCR1's value to - register SCFG_SPARECR8.(uboot's psci also - need reading value from the register SCFG_SPARECR8 - to set register RCPM_IPPDEXPCR1) - -Impact: - - FlexTimer module will cannot wakeup system in - deep sleep on SoC LS1021A - -Reviewed-by: Ran Wang <ran.wang_1@nxp.com> -Signed-off-by: Biwen Li <biwen.li@nxp.com> ---- - drivers/soc/fsl/rcpm.c | 47 +++++++++++++++++++++++++++++++++++++++++++++-- - 1 file changed, 45 insertions(+), 2 deletions(-) - ---- a/drivers/soc/fsl/rcpm.c -+++ b/drivers/soc/fsl/rcpm.c -@@ -6,13 +6,16 @@ - // - // Author: Ran Wang <ran.wang_1@nxp.com> - -+#include <linux/acpi.h> - #include <linux/init.h> -+#include <linux/kernel.h> -+#include <linux/mfd/syscon.h> - #include <linux/module.h> --#include <linux/platform_device.h> - #include <linux/of_address.h> -+#include <linux/platform_device.h> -+#include <linux/regmap.h> - #include <linux/slab.h> - #include <linux/suspend.h> --#include <linux/kernel.h> - - #define RCPM_WAKEUP_CELL_MAX_SIZE 7 - -@@ -37,6 +40,9 @@ static int rcpm_pm_prepare(struct device - struct device_node *np = dev->of_node; - u32 value[RCPM_WAKEUP_CELL_MAX_SIZE + 1]; - u32 setting[RCPM_WAKEUP_CELL_MAX_SIZE] = {0}; -+ struct regmap *scfg_addr_regmap = NULL; -+ u32 reg_offset[RCPM_WAKEUP_CELL_MAX_SIZE + 1]; -+ u32 reg_value = 0; - - rcpm = dev_get_drvdata(dev); - if (!rcpm) -@@ -90,6 +96,43 @@ static int rcpm_pm_prepare(struct device - tmp |= ioread32be(address); - iowrite32be(tmp, address); - } -+ /* -+ * Workaround of errata A-008646 on SoC LS1021A: -+ * There is a bug of register ippdexpcr1. -+ * Reading configuration register RCPM_IPPDEXPCR1 -+ * always return zero. So save ippdexpcr1's value -+ * to register SCFG_SPARECR8.And the value of -+ * ippdexpcr1 will be read from SCFG_SPARECR8. -+ */ -+ if (device_property_present(dev, "fsl,ippdexpcr1-alt-addr")) { -+ if (dev_of_node(dev)) { -+ scfg_addr_regmap = syscon_regmap_lookup_by_phandle(np, -+ "fsl,ippdexpcr1-alt-addr"); -+ } else if (is_acpi_node(dev->fwnode)) { -+ dev_err(dev, "not support acpi for rcpm\n"); -+ continue; -+ } -+ -+ if (scfg_addr_regmap && (i == 1)) { -+ if (device_property_read_u32_array(dev, -+ "fsl,ippdexpcr1-alt-addr", -+ reg_offset, -+ 1 + sizeof(u64)/sizeof(u32))) { -+ scfg_addr_regmap = NULL; -+ continue; -+ } -+ /* Read value from register SCFG_SPARECR8 */ -+ regmap_read(scfg_addr_regmap, -+ (u32)(((u64)(reg_offset[1] << (sizeof(u32) * 8) | -+ reg_offset[2])) & 0xffffffff), -+ ®_value); -+ /* Write value to register SCFG_SPARECR8 */ -+ regmap_write(scfg_addr_regmap, -+ (u32)(((u64)(reg_offset[1] << (sizeof(u32) * 8) | -+ reg_offset[2])) & 0xffffffff), -+ tmp | reg_value); -+ } -+ } - } - - return 0; |