On 2021/9/9 20:59, Heiko Thiery wrote:
Return the root clock values for MXC_CSPI_CLK, MXC_I2C_CLK, MXC_UART_CLK and MXC_QSPI_CLK. At least for the I2C clock the missing support leads to a wrong configured I2C frequency. The expected value is 100kHz but the resulting value is about 1MHz. Signed-off-by: Heiko Thiery <[email protected]> --- More information and measurements about the wrong configure I2C frequency can be found here: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.denx.de%2Fpipermail%2Fu-boot%2F2021-September%2F460176.html&data=04%7C01%7Cpeng.fan%40nxp.com%7C3fd04432d40141466d4208d97391b927%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637667891977601595%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2BYXFWRvw3LG%2FhqKU0uxxrvCXiqfKD3qL80DISvG6PQA%3D&reserved=0 arch/arm/mach-imx/imx8m/clock_imx8mq.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mq.c b/arch/arm/mach-imx/imx8m/clock_imx8mq.c index 60e2218a3c..9db62b944e 100644 --- a/arch/arm/mach-imx/imx8m/clock_imx8mq.c +++ b/arch/arm/mach-imx/imx8m/clock_imx8mq.c @@ -359,10 +359,18 @@ unsigned int mxc_get_clock(enum mxc_clock clk) clock_get_target_val(IPG_CLK_ROOT, &val); val = val & 0x3; return get_root_clk(AHB_CLK_ROOT) / (val + 1); + case MXC_CSPI_CLK: + return get_root_clk(ECSPI1_CLK_ROOT); case MXC_ESDHC_CLK: return get_root_clk(USDHC1_CLK_ROOT); case MXC_ESDHC2_CLK: return get_root_clk(USDHC2_CLK_ROOT); + case MXC_I2C_CLK: + return get_root_clk(I2C1_CLK_ROOT); + case MXC_UART_CLK: + return get_root_clk(UART1_CLK_ROOT); + case MXC_QSPI_CLK: + return get_root_clk(QSPI_CLK_ROOT); default: return get_root_clk(clk); }
Reviewed-by: Peng Fan <[email protected]>
