diff options
Diffstat (limited to 'target/linux/ipq807x/patches-5.15/0049-v6.2-clk-qcom-reset-support-resetting-multiple-bits.patch')
| -rw-r--r-- | target/linux/ipq807x/patches-5.15/0049-v6.2-clk-qcom-reset-support-resetting-multiple-bits.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/ipq807x/patches-5.15/0049-v6.2-clk-qcom-reset-support-resetting-multiple-bits.patch b/target/linux/ipq807x/patches-5.15/0049-v6.2-clk-qcom-reset-support-resetting-multiple-bits.patch new file mode 100644 index 0000000000..e0725a6612 --- /dev/null +++ b/target/linux/ipq807x/patches-5.15/0049-v6.2-clk-qcom-reset-support-resetting-multiple-bits.patch @@ -0,0 +1,59 @@ +From 813ba3e427671ba3ff35c825087b03f0ad91cf02 Mon Sep 17 00:00:00 2001 +From: Robert Marko <robimarko@gmail.com> +Date: Mon, 7 Nov 2022 14:28:59 +0100 +Subject: [PATCH] clk: qcom: reset: support resetting multiple bits + +This patch adds the support for giving the complete bitmask +in reset structure and reset operation will use this bitmask +for all reset operations. + +Currently, reset structure only takes a single bit for each reset +and then calculates the bitmask by using the BIT() macro. + +However, this is not sufficient anymore for newer SoC-s like IPQ8074, +IPQ6018 and more, since their networking resets require multiple bits +to be asserted in order to properly reset the HW block completely. + +So, in order to allow asserting multiple bits add "bitmask" field to +qcom_reset_map, and then use that bitmask value if its populated in the +driver, if its not populated, then we just default to existing behaviour +and calculate the bitmask on the fly. + +Signed-off-by: Robert Marko <robimarko@gmail.com> +Signed-off-by: Bjorn Andersson <andersson@kernel.org> +Link: https://lore.kernel.org/r/20221107132901.489240-1-robimarko@gmail.com +--- + drivers/clk/qcom/reset.c | 4 ++-- + drivers/clk/qcom/reset.h | 1 + + 2 files changed, 3 insertions(+), 2 deletions(-) + +--- a/drivers/clk/qcom/reset.c ++++ b/drivers/clk/qcom/reset.c +@@ -30,7 +30,7 @@ qcom_reset_assert(struct reset_controlle + + rst = to_qcom_reset_controller(rcdev); + map = &rst->reset_map[id]; +- mask = BIT(map->bit); ++ mask = map->bitmask ? map->bitmask : BIT(map->bit); + + return regmap_update_bits(rst->regmap, map->reg, mask, mask); + } +@@ -44,7 +44,7 @@ qcom_reset_deassert(struct reset_control + + rst = to_qcom_reset_controller(rcdev); + map = &rst->reset_map[id]; +- mask = BIT(map->bit); ++ mask = map->bitmask ? map->bitmask : BIT(map->bit); + + return regmap_update_bits(rst->regmap, map->reg, mask, 0); + } +--- a/drivers/clk/qcom/reset.h ++++ b/drivers/clk/qcom/reset.h +@@ -12,6 +12,7 @@ struct qcom_reset_map { + unsigned int reg; + u8 bit; + u8 udelay; ++ u32 bitmask; + }; + + struct regmap; |